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smoky fire, we found a solitary and very old man, who expressed neither surprise nor gratification at the sight of visitors.

THE CARBON ARI.

THIS word, so significant of mystery, crime, and power, is the distinctive title of a secret society or order, of whom, notwithstanding their own desire to prove a descent from the Templars, we find no mention in history until the close of the fourteenth century; when we read that the necessity of mutual assistance induced the charcoal-burners who inhabited the vast forests of Germany, to unite themselves against robbers and enemies.' Isolated from the rest of mankind by the peculiar nature of their toil, which removed them, as it were, from the great confederacy of social life, these colliers or burners, though born with the same feelings as other men, were yet cut off from all the ordinary privileges of humanity. The faculties with which God had endowed them were left unfolded and untaught, and darkness covered their hearts and understandings, until it became a humiliation to contemplate the depth to which human nature may fall when man is bowed down to the earth in the power of his prime by fruitless labour; and his only possessions are the memories with which his heart is stored, of long and hard endurance, of wretchedness and toil, oppression and wrong. In the same forests with the charcoal-burners dwelt hordes of robbers, many of whose acts of fearful cruelty we find on record; but they and the colliers had nothing in common save their local habitation. The grave alone could have kept them more apart than did their mutual jealousies and dislikes. Notwithstanding this, however, an instance at last occurred in which the robbers, in their insatiable desire for plunder, forgot the cautious policy they had heretofore observed towards the burners, and breaking into their enclosures, carried off some valueless booty. This infringement of a tacit agreement of mutual avoidance aroused the bitter anger of the charcoal-burners, and every feeling of their perverted and degraded nature was gathered into one strong and keen desire for revenge.

It was on this occasion they formed themselves into an association, and bound themselves by an oath, known afterwards as the 'faith of the colliers,' to seize every opportunity of attacking and destroying the robbers, until not one should find a shelter for his head in all the forests of Germany. In a short time their repeated victories made them aware of their power; they felt that their fierce strength as a body was irresistible, and with the conviction came also the instinctive desire, not only to exterminate the plunderers, but to emancipate themselves from the dishonouring slavery of their condition. They had long pined under the hardships of severe forest-laws, the partial repeal of which they had often vainly petitioned for; now, they demanded their total abolition, declaring death the penalty in the event of a refusal. Their demand was granted. Naturally regarding this first triumph over a reigning prince as the first-fruit of what was to come if they remained united, they determined on framing a code of laws, to which all should swear implicit obedience. They next divided themselves into tribes, each tribe agreeing to meet at stated periods at a lodge; and they then assumed the title of the 'Carbonari.' Over the whole society one member presided; he was chosen by lot, and was bound to meet the heads of the tribes at stated periods in the lodge, which was situated then in the gloomiest depths of a forest. At first, these lodges were but assemblages of ferocious men, whose lives had been passed in degradation and oppression, and from whose weary hearts excess

of toil and poverty had dried up the well-spring of kindly feelings and affectionate desires, leaving behind only such fierce passions as incite the lower animals to supply the necessities of their physical wants and those of their offspring, and to rush upon and destroy whatever threatens them with danger.

In the course of time, however, the character of the Carbonari underwent a great change. The severe necessity for unremitting labour was removed by the from the chain which bound them to toil and sickabolition of the forest laws, and the men had a release ness and a scanty morsel. The natural consequence was, that the more they felt removed from physical want, the more elevated became their moral character. The laws and constitution of the order were remodelled; and although they were then, and are still, deeply tinged with fanaticism, yet they are framed with such artful policy, that one can hardly wonder at the rapid progress the order made to wealth and power. In less than a century after we read of its first organisation in the forests, we find that it has spread over Germany, France, and the Netherlands, and enrolled among its members persons of the highest rank. But in the present century, the greatest field of the society has been Middle and Lower Italy.

The form observed on the reception of a member was very absurd, though, no doubt, the young aspirant considered it deeply impressive. The candidate was styled a 'pagan,' and was led blindfold from the closet of reflection' to the door of the 'baracca,' by the preparator' or preparer, who affected to knock with mysterious irregularity. The copritore, or coverer, on hearing these sounds, turns from where he stands inside the door, and addressing his assistant-copritore, says: 'A pagan knocks for admission.' The assistant repeats the same to the chief door-keeper, who in turn repeats it to the grand-master, and at every communication the grand-master strikes a blow with an axe.

Grand-master: See who is the rash being who dares to trouble our sacred labours.'

This question having passed through all the officials to the preparator, he answers through the opening of the door:

'It is a man whom I have found wandering in the forest.'

'Ask his name, country, and profession,' commands the grand-master through his officials.

The replies being instantly returned, the secretary writes them down.

'Ask him his habitation and his religion.' The secretary notes each reply.

'Ask him,' again commands the grand-master, what is it he seeks amongst us.'

The preparator replies: 'Light, and to become a member of our society.'

'Let him enter,' are the words which next pass slowly and solemnly from lip to lip.

The pagan is then led into the middle of the assembly; he is again questioned, and his replies are compared with what the secretary had previously written down. The grand-master then puts the following questions directly:

'Mortal, the first virtues we require are frankness and courage. Do you feel that you are capable of practising both, to the utmost?'

The pagan replies; and the grand-master, if satisfied, continues by questioning him on morality and benevolence. He then inquires whether there is anything of which he would wish to dispose, or if there is any domestic concern he would desire to arrange, as he is at that moment in danger of immediate death. If pleased with the answers and demeanour of the aspirant, the grand-master continues:

'It is well. We will expose you to trials in which you will discover a meaning. Let him make the first journey.'

The candidate, who is still blindfold, is then led out of the baracca, and caused to journey through the forest.

At first, the silence is unbroken; he seems to be in a vast desert, alone. The grass beneath his feet is tangled and damp, and the air he breathes is heavy and noisome. He brushes, in his devious course, against the arm of a tree, and the next instant the wild cry of a bird, as she rises from among the branches overhead, fills the air. His feet are becoming entangled in underwood, and the crackling noise, as he breaks weakly through, sounds strange. At length, a light breeze comes whispering amongst the leaves of the forest, making low mysterious music. The candidate's mind is becoming oppressed with strange wild thoughts-in silence, in solitude, in darkness rendered thick by the bandage, he is groping his way alone. He no longer hears the rustling of the leaves, for there is a sound of rushing waters in his ears-the struggle is becoming fearful between his imagination and his judgment; for a moment the regular healthy pulsations of his heart cease, and then comes the thick heavy throb of intense suspense and anxiety. At this moment, the preparator -whose tread, though close, he had not heard-lays hold on him, and leads him back to the door of the baracca, where the same form as at first is again repeated before he is admitted to the presence of the grand-master. He is then questioned as to what he had encountered in his first journey, and having related all, the grand-master replies:

'Your first journey is the symbol of human life. The obstacles you have encountered, and the noises you have heard, indicate to you that in this vale of tears you will meet many difficulties and distractions in the path of virtue, and that you must struggle through and disregard all, if you would arrive at last at the goal of happiness. Let him make the second journey.'

The candidate is then led away, and having been made to pass through a fiery ordeal, is shewn what appears to him a human head newly severed from the body. The bandage, which had been for an instant removed from his eyes, is replaced, and he is once more conducted to the baracca. Being admitted as on the former occasions, the grand-master tells him that the fire through which he had been made to pass was symbolical of the flame of charity, which should ever be alive in his heart towards every worthy individual; that the head was that of a perjurer who had just been punished. He then commands the preparator to lead the pagan to the foot of the throne, and when this is done, he asks in a slow, impressive

manner:

'Are you willing to take an irrevocable oath, which neither offends religion, nor the state, nor the rights of individuals? Forget not, before you swear, that the penalty of its least violation is death.'

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'It will be granted to you by the blows of my axe.'

The grand-master strikes with the axe, and the action is repeated by each of the carbonari. The bandage is then suddenly removed from the eyes of the candidate, who sees a circle of gleaming axes raised above his head, and hears thundered in his ears by the grand-master:

'These axes will surely put you to death, should you ever, even in the least degree, violate the obligations of your oath. Do not hope to conceal yourself-in the dens and caves of the earth, you will meet the carbonari. Do not expect to avoid your doom by flight-at the utmost bounds of this globe, a member will confront you. If you sin-die; you will then have sought the only refuge from which the arm of the carbonari cannot snatch you. On the other hand, if you are faithful to the end, these axes will be raised in your defence, should you ever need them; and you may pass through life with the conviction, that in every peril, need, or difficulty, you shall ever find yourself in, you have but to look to the right hand or the left, to meet friendly and efficient help. And now, in the name and under the authority of our founder, and in virtue of the power which has been conferred on me in this honourable vendita, I make, name, and create you an apprentice.'

The grand-master then instructs him in the secret words and touch, and being congratulated by all the assistants and apprentices present, the vendita is dissolved.

What the objects of this order were, when it was first instituted, we have already shewn; what they afterwards became, we learn from the following oration delivered in a vendita at Naples, during the usurpation of Murat:

‘Know, finally, that the object of respectable carbonarism is to restore to the citizen that liberty and those rights which nature bestowed on us, and which tyranny itself did not deny us. To attain to this object, it is necessary to try the virtue, and to consolidate the union of courageous and exemplary citizens: this is no trifling labour, since the cunning of political tyranny has interposed a thick veil between men's eyes and the sublime light of truth. Wretched mortals study those false maxims which, leading to prejudice and superstition, envelop them in darkness, and induce them to lead a life of slavery and submission to ill treatment, blind to the origin of their misfortunes. O men! do you not hear the clank of the chains with which you are bound? They are fastened upon you by the tyrant.

By the law of nature, he who seeks to destroy, should be himself destroyed. And are not kings, who, forgetting that they are men, proudly regard themselves as superior beings, and usurp the right of disposing of the blood of their fellow-men, and of looking upon them as slaves, are they not the lords of the wives and children, and possessions of these slaves? And yet honour, and homage, and respect, are still paid to these infernal monsters! O blindness of man!

The pagan, having signified his willingness, is made to kneel on a white cloth, and to promise and swear on the statutes of the order, scrupulously to keep the secret of the carbonari, and neither to write, engrave, nor paint anything concerning it without having obtained a written permission. He also binds himself 'But as the maxims of the carbonari are founded to help each member of the order under all circum-on the simple principles of nature and reason, and on stances, by every means in his power-never to attempt anything against the honour of their families; and, finally, he declares that he willingly consents, should he ever be guilty of perjury, to have his body cut in pieces, then burned, his ashes scattered to the winds, and his name held up to the execration of the carbonari throughout the earth. After this, he is led into the centre of the apartment, the members |

the doctrines of the gospel, it belongs to them to overturn the throne, raised by fanaticism and ambition, and to expel from it the monster who pollutes the whole creation. The blood of so many innocents, torn by main force from the bosoms of their families, and sent to perish in capricious wars; the blood of so many illustrious citizens slaughtered for speaking the language of truth-this blood, I say, calls on us for

vengeance; and the number of our friends now groaning in fetters claim our assistance. Yes, the carbonari, knowing what truth and justice are, and possessing humane and candid hearts, will one day vindicate the rights of man. Having found your conduct to be regular and zealous towards the order, we have admitted you into the chamber of honour; that is to say, among the sworn members of the republic. You are come here to tender your lives for any service, when the carbonari shall invite you to save your country from oppression.'

The alta vendita in which this oration was delivered was composed of honorary members and of deputies from each particular vendita. It was declared to be an administrative and legislative body, and a court of council and of appeal; and it was accordingly divided into different sections. It was the business of this vendita to grant charters of organisation to new lodges, or to confirm such as were submitted for its approbation. A regular system of correspondence was, in 1814, established between it and all the provinces of the kingdom; and it is said that the number of carbonari increased during that year with such astonishing rapidity that they were counted by tens of thousands. The whole population of many towns enrolled themselves, and entire regiments most willingly joined. Magistrates were compelled to enter, in order to obtain anything like obedience to their decrees; and all who were unprotected, were glad to become members, in hopes of support in the vicissitudes with which they were threatened. Those who were of a more enterprising turn rejoiced at finding themselves exalted into judges on the great questions of the nation; and imagined themselves the defenders of the injured and oppressed.

Murat was in some degree aware of the state of public feeling; but neither fearing personal danger, nor doubting the stability of his throne, he merely thought it necessary to endeavour to intimidate the carbonari by employing against them an active system of police. As it is a historical fact, however, that Maghelli, a native of Genoa, was at the same time director-general of police under the usurper, and organiser of the Papal States under the Carbonari, it will be readily believed that he did not divide his services, and that Murat was not the master to whose work he put his strength.

In 1815, the French dynasty in Naples was at an end; the Austrian army was advancing; Ferdinand was about to reascend the throne: it was the Carbonari who brought back the king.

ENCOUNTER WITH A BEAR. SOME years since, when serving with my regiment in Canada, I obtained two months' leave of absence, for the sake of enjoying some of the wild sports of the

far west.

It was the commencement of the Indian summer, that 'moon' of glorious weather, when summer, seeming to regret the beautiful land she has left, revisits it for a brief season. Not a leaf had fallen from the trees but the brightest gold and crimson tints were flashing and glowing among their verdure; the wild bines and briers were covered with berries of scarlet, and ruby, and orange, almost as brilliant as their departed blossoms. Sweet-scented Indian-grass, studded with thousands of flowers, made gay the juniper copse; and their mingled perfume came floating to us across the smooth lake, as we threaded the labyrinth of the Christian Islands, which are said to number thousands.

Once clear of the archipelago, we raised our blanket-sail, and stretched out towards the head of

the lake, merely landing to cook and sleep, for, only less than myself did my two Indians long to reach the haunts of the deer and the moose, and the far-off land of the bison. How I waged war against them, matters not to my present story; suffice it to say that I was successful, and that my leave was drawing to a close ere I again turned my face towards the colony, laden with trophies sufficient to make me the envy of any sportsman.

Small and light as my canoe was, it had to be abandoned when we left the lakes, and my tent had to be left also, being too heavy to carry with us; in fact, our equipment soon dwindled down to a blanket and waterproof wrapper each, and a few cooking utensils. Thus, when we again struck Lake Huron, which was at its south-west extremity, we were without a boat of any kind; and had we still possessed our old canoe, it was too small to have been of service in the wild inclement weather which had now set in, for it was the beginning of November, and the ground was covered with snow; though the lake was not frozen over. I therefore resolved to continue our route on foot to the Sault de St Marie, at the entrance of Lake Superior, where I hoped to obtain a larger canoe and additional boatmen; but on our way there, we encountered a fur-trader's bateau, bound to the lower end of the lake, and I engaged passages in her for myself and my Indians.

A flat-bottomed lumbering barge was my new conveyance-very different from my swift, graceful canoe; yet she bowled merrily along when the wind favoured her; and when it was contrary, progressed heavily beneath the influence of long sweep-like oars, wielded by the stout arms of half-a-dozen Canadians, who beguiled their labour with soft monotonous songs, which, with the murmur of the waves, floated round us like the music of a sea-shell. When our day's voyage was over, and, in the darkening twilight, we brought our boat to land, and tied her to the boll of a tree, more boisterous strains rose round the gipsy fires that were thickly lighted along the shore, and continued unceasingly, mingled with the fizzing of frying-pans and the bubbling of coffee-pots, until all hands retired to the boat to sleep-all save myself; and to escape such a medley, I would willingly have submitted to greater hardships than, wrapped in my blanket, to sleep beside the fire left burning on the beach.

For the first two or three nights-probably in consequence of the unwonted inaction of the day-I lay awake for hours, enjoying the solitude and admiring the northern lights as they quivered above me in vivid coruscations. But, on the fourth night, I slept soundly; so soundly as to be unconscious that the presage of those brilliant streamers was being fulfilled, that the air was filled with snow, and that a furious storm was rushing through the primeval forest, breaking the young trees like saplings, and here and there casting down with a resounding crash some vegetable patriarch. Such an incident, occurring in my immediate neighbourhood, at length aroused me, and I was surprised to find myself warmly enclosed in a bank of snow. I looked around, but the snow-curtain hid everything from my view, save the fire, which had not yet succeeded in consuming the huge logs piled upon it; so I lay down again, and despite the tempest, slept tranquilly until morning.

was shining out from the clear blue sky. I started up, When I opened my eyes again, the sun had risen, and and shook myself free from the snow, hunter fashion; but what could equal my surprise and consternation when, looking towards the lake, I saw nothing but blue rippling waters! Not a vestige was visible of the bateau, which I had last seen lying by the shore, save a broken fragment of rope round the tree from which

she had broken loose in the storm, and then floated out from land with her sleeping crew, leaving me alone in the wilderness.

Alone without resources, without a guide, I stood in that vast solitude, hundreds of miles distant, most probably, from any human being, ignorant even of so much of forest-lore as was required to tell me how I had best bend my steps. But for a hope that the bateau might return for me, I should have been overwhelmed by despair. That thought upheld me; and all the hours till nightfall-and that November day was the longest I ever knew-I sat watching with straining eyes for the returning boat. The setting sun left me still a watcher, though no longer hopeful; and by the time the stars shone out in the sky, I had begun to realise the fact that, under Providence, it was on my own exertions alone I must depend to save me from perishing in the wilderness.

That night I sat beneath the aurora, seeking not to sleep, but gazing moodily into the fire, reflecting on what was to be done, while I grasped tightly my rifle, the only friend left to me, save the knife and revolver in my belt. The only plan I could decide on was to turn to the eastward, and travel along the shore, contenting myself with the certainty that, however slowly, I should at least be advancing towards the colony; and as soon as the dawn spread over the sky, I rose to commence my solitary journey.

As I turned to leave the spot, something glittered darkly on the ground: it was a tomahawk; and I raised and placed it in my belt, with deep gratitude for this timely gift of Providence. It would have gone ill with me in the inclement weather which the storm preluded without that tomahawk to chop wood for the fires that warmed me in those nights of intense frost, and cooked the venison and partridges I shot for food, as I toiled wearily on my way, coasting the promontories and bays, lest I should get out of sight of the lake, and so completely lose my way.

For four days I travelled on, while each day was colder than the last; and on the sixth day, a violent snow-storm overtook me on an open plain. For some time I struggled blindly against it, in the effort to gain a place of shelter; but it was of no use; and in the end I was glad to crouch in the lee of a solitary dwarf-fir, and wrapping myself in my blanket, let the snow form a hillock over me. This covering, so cold in itself, imparted warmth to me; and I was soon in a deep dreamless sleep, from which I did not awake until next morning.

Oh, how stiff I was when I awoke!-so stiff and numb I could scarcely creep out of my snow-bower; and when I attempted to rise to my feet, I fell on the snow again in indescribable agony, which I soon found to be the result of both my feet being frostbitten. Few are long in that climate without learning what is needful to be done in such an emergency, and I at once began to rub my feet with snow; but it was with a heavy heart, for if I was disabled, what was to become of me in that desolate spot?

At length, as if by instinct-for hope had deserted me long before-I went forth on my journey, a miserable cripple, leaning on my rifle, and on a stick that at each step sunk deep into the snow, and with my suffering feet wrapped in the fur of the hares I had killed.

In this way I dragged myself slowly along, until night came, when I sank down utterly exhausted, unable to bestow upon myself any of the care I stood so much in need of. All I could do was to seek a commodious sleeping-place-that is to say, a sheltered thicket, with an open space in front for my fire. One evening, I esteemed myself fortunate in finding a cave, which a mass of brushwood at the entrance had kept free from snow; the air inside was so warm that it was positively luxurious; and while

busy making a fire before it, I resolved on remaining there a day or two to recruit.

The very idea was refreshing; and in unusual spirits I skinned a hare I had shot during the day, and placed it, hunter fashion, on two sticks before the fire. Scarcely was it placed in this torrid zone, when something between a grunt and a groan seemed to intimate its dislike to its new position. I started; and in the horrible doubt whether I had not committed the barbarity of flaying and impaling a living animal, I stretched out my hand to withdraw it from the fire, when another grunt, unmistakably behind my back, caused me to look round. But nothing was visible in the deep dim cavern save the carpet of dried leaves which the autumn winds had swept into it; and concluding there was some cranny in my new domicile through which the wind came grumbling down, I addressed myself to my roast.

The next moment, an undoubtable growl, so deep and fierce that it echoed through the cave, startled me to my feet; and I turned to find myself closely confronted by an enormous grizzly bear, the most fearful animal of the American wilds. How ferociously his eyes glared on me from under his shaggy brows, as he opened them from the new-fallen sleep, which the warm beams of my fire had dispelled, and how convulsively his huge jaws worked and quivered in eager longing to devour me! Ere I had time to snatch the revolver from my belt, the gigantic beast rose toweringly above me, and opening his enormous paws, pressed me to him in close embrace-so close, that my arms were pinned to my sides, and my very bones seemed to crack in that vice-like hug. I believe I screamed with the sudden agony, but the sound was lost in the deep-mouthed growls, like muttering thunder, that filled the cave.

Weak and exhausted as I was, I felt myself unequal to cope with the powerful beast in whose grasp I was; but even if life were little worth to a solitary such as I, this mode of death was so horrible, that it nerved me to efforts beyond my ordinary strength, and somehow my hand managed to creep up towards my belt. But ere I could reach the weapon I sought, a movement of the bear had loosened it, and firing a single barrel, it fell to the ground among our feet. The report echoing through the cave, alarmed my adversary; and with a more threatening growl, he clasped me closer, and for the first time his claws penetrated my clothes, inflicting terrible wounds.

But my hand had met an unexpected friend in my knife, which I had unwittingly thrust into my belt, and with it I inflicted several random stabs on my antagonist. This, however, seemed only adding to my own sufferings; for, maddened by the pain, the bear threw himself on the ground, and rolled over with me in his agony, while his huge teeth munched and tore at the blanket which a fortunate fit of toothache had made me wrap round my head. Not that that or any other earthly matter seemed likely to concern me long, for the strength of excitement was already passing, a strange murmur was mingling in my ears with the fierce growls of my enemy; and the pain of his claws changed into a vague yet universal agony, as consciousness and life were being pressed out in that terrible hug.

Suddenly a sound echoed through the cave, so sharp that it reached even my failing faculties, and appeared to thrill likewise on the nerves of my foe, to judge by the increased emphasis of his embrace; but the next instant he relaxed his hold, and sank helpless on the ground beside me, his almost insensible victim.

My first sensations as I revived were of burning pains all over my body, and exceeding cold in my hands and face; and I opened my eyes to find a young Indian bending over me, and rubbing me with

snow. Passing near the cave, he had seen my fire, and heard the report of my revolver, and hastened to see what was the matter, just in time to save me from a miserable death and a revolting sepulchre. All night long this good Samaritan sat beside me, tending the gaping wounds through which life threatened momentarily to escape; and when morning broke, he left me for a short while to go to his village-which was scarcely a mile distant -for help. In one of the lodges of that Indian hamlet I passed the remainder of the winter, prized and tended as if I had indeed been the brother' that in their stately yet kindly courtesy they styled me. Thanks to their skill in forest simples, my wounds healed marvellously; and when the sweet breath of spring broke the ice-fetters of the lakes and rivers, I was sufficiently recovered to embark in my preserver's canoe, the skin of my defunct foe forming a luxurious couch.

My return to the land of civilisation something resembled that of a spirit to the land of the living: I will not say my place had forgotten me; for I had no longer a place, since my lieutenancy, my quarters, and my uniforms had other occupants; and very loath the tenants were, especially that of the first, to admit the fact of my resuscitation.

varieties. It is immediately distinguished from any other description of rock or stratified earth by the presence, in its mass, of innumerable spherical nodules, varying in size from that of a millet-seed to that of a marble, from which, indeed, the name oolite has been taken-Greek, oon, an egg, and lithos, a stone-as being a rock composed of eggs, or an egg-rock.

How have these oolitic rocks, which differ so much from all the others, been formed? This question has puzzled geologists, chemists, mineralogists, paleontologists, &c., ever since oolites were first observed. Some have seen a grain of sand rolling along the calcareous bed of a trout-stream, gradually cover itself with a crust of limestone, and, rolling still, soon present the aspect of an isolated oolite. To these sporadic nodules, the name of Pisolites has been given. Is it, then, in the agglomeration of these pisolites that must be sought the explanation of oolitic structure? Others have seen pisolites form in the interior of steam-engines, when certain substances have been introduced to prevent the calcareous matter contained in the water from depositing upon the sides of the boilers; and they have concluded that pisolites could be formed in thermal or hot mineral springs as well as in streams. It was observed that these nodules are easily cemented together by water holding calcareous or other mineral matter in solution, and it was consequently supposed, pretty generally, that pisolites may have given rise to the peculiar structure of the oolitic beds observed in nature.

But now comes another and very ingenious theory respecting the origin of oolite-here, at the commencement of the present year, we have two observers who look upon these rocks as having an organic origin! Mr Bowring and M. Virlet d'Aoust think

THE BOAT-FLIES OF MEXICO. THE boat-fly or water-bug* derives both its names from its well-known habit of turning itself over on the water like a boat, and so swimming about, with its head downward. It abounds amongst our ponds and ditches, and may be readily observed, though not readily caught there, during the day; but at eve it rises into the air and flies away in search of food, which it finds either by making prey of smaller insects, or by parasitically attacking the larger ani- indeed, have apparently proved by direct observamals, after the manner of other bugs. When you tion-that the oolitic globules have been, and are succeed in catching one-no easy matter-most likely still formed by an incrustation of carbonate of lime it will thrust out its beak into your hand, and there deposited upon the eggs of certain water-insects, leave an irritating poison, the effects of which, how-belonging to the family of the Notonectidæ, or boat-flies. ever, soon pass off.

The fact of these insects swimming upon their backs is a remarkable peculiarity in their history; indeed, no other entomological tribe presents this peculiarity, which thus serves to distinguish, at a glance, a member of the Notonectida from any other aquatic or land insect; and, although the greater part of their life is passed under water, their bodies, like those of the water-fowl, never get wet, for they are more or less completely covered with very minute hairs or bristles, which imprison-at least, on the surface of the wings upon which they swim-a sheet of air, and effectually prevent the immediate contact of water with the body of the insect. Nature has provided for most aquatic insects in the same way. Such are a few facts relating to our English species of boat-fly; but, in Mexico, we find other varieties of these water-bugs, which will furnish us with the occasion of noticing some very curious phenomena. But to do this, we must soar for an instant from the entomological kingdom into the domain of geology.

Our readers are doubtless acquainted with the oolite limestone. In the British Museum, and at the Jardin des Plantes of Paris, likewise in several provincial collections, are to be seen some magnificent specimens of this remarkable rock and its many

Sciences at Paris by M. Virlet, in which he endeavours A paper has lately been read at the Academy of to prove, not only that oolite must have been formed in very ancient, anti-historic times, from the eggs of similar aquatic insects, but that the same wonderful cause of rock-formation is extremely active in Mexico at the present time.

stone may appear at first sight, we must not be too hasty in rejecting altogether the statements brought forward by the above-named author. Has not Dr Ehrenberg shewn that immense masses of the earth's crust owe their origin to a profusion of microscopic Infusoria and Foraminifera?—and, Mr Rupert Jones, has he not discovered that great portions of the surface of our globe are strewed with Entomostracaresembling our little water-fleas (Cypride)? Has not small crustaceans (formerly taken for bivalve mollusca) Dr Bowerbank ingeniously demonstrated that flints and moss-agates are nothing more than petrified or fossil sponges; and do we not know with certainty that a great part of the earth's structure is composed almost entirely of corals and shells? M. Virlet rocks owe their formation to myriads of minute eggs, d'Aoust, in his turn, endeavours to shew that oolitic the seed of some aquatic insects. Here are the facts observed:

However extraordinary this origin of oolitic lime

Every one has heard of the great plain of Mexico, situated some 7500 feet above the level of the sea, and from whence Humboldt brought back with him what The family of the Notonectide, as the water-bugs are called, neither more nor less than a large fossil salamander was called an antediluvian man (homo diluvii testis), being

belongs to the hemipterous section of the insect order.

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