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and faw that the wound I had made the day before had penetrated the ventricle of the cerebellum, as far as the bafis of the fkull. Every place was full of clotted blood, as well in the bafis of the fkull, as the parts between the ventricle of the cerebellum and the cerebellum itfelf, because the fourth finus had been open'd by the largeness of the wound. As to the firft wound that was made, it paffed through the middle of the fubftance of the cerebellum to the oppofite fide.

EXPERIMNT IX.

directing it ftraight forward, The dog, tho' ftunn'd with

Another day, I thruft the inftrument through the middle of the hind bone of the head, and a little towards the bafis. the ftroke, loft neither motion nor fenfation; on the contrary, the pain caused him to howl. I found him the next day living, as before. Then I pierc'd the cerebellum, having plunged the inftrument through the lower and lateral part of the hind bone of the head, directing the instrument from the left to the right, towards the bafis. At fix in the evening he was yet living, but extremely feeble: he was depriv'd both of fenfe and motion, and the palpitation of his heart, as well as his respiration, was very fmall. This circumftance induced me to make an experiment upon the nerves of the diaphragm. I open'd the breaft, and found the parts were as cold, as if he was actually dead; but the palpitation of the heart, and the refpiration ftill continued. I preft the nerve of the diaphragm ftrongly with my fingers, and then I irritated it above the compreffion, which caused the diaphragm to contract: afterwards I tied the nerve, and having irritated it, above the ligature, I perceiv'd no motion of the diaphragm; but when I irritated the nerve below the ligature, the diaphragm began to contract: then I cut the nerve in two, and irritated the inferior part, and this irritation was always followed by a contraction of the diaphragm. I observed the fame thing on the other fide. The diaphragm was contracted, whether I pinch'd the nerve above or be

low.

lów. Upon opening the fkull, I faw the firft ftroke had penetrated through the medullary substance of the brain into the brain itself; and that the other stroke, past a little lower, on one fide, through the medulla of the brain, croffing the fourth ventricle, and proceeding to the oppofite fide of the head. The fourth ventricle was full of grumous blood, and the medulla spinälis was furrounded with blood.

EXPERIMENT X.

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I repeated the fame experiments upon an apoplectick dog, and all the phænomena were like the former; when I had obferv'd this, I took out the heart, with a fingle ftroke of a knife, and perceiv'd the heart beat strongly in my hand, as often as I irritated it with the edge of the knife, which continued four minutes; after which I caft it into cold water, and faw it ftill palpitate, by fits, 'till it was quite cold.

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I took out, by means of a trepan, a round piece from the skull of a dog, and raising a part of the temporal muscle I began to prick the dura mater, which lay in fight, and to irritate it with the point of the knife; I then pour'd a solution of fublimate mercury thereon, but the animal fhew'd no. fign of pain, and remain'd without any convulfion. This made me think he was apoplectick, for which reafon I irritated the raw part of the skin, when by his howling, he discover'd that he was fenfible of pain. The motion of the dura mater,and of the arteries, was made at the fame instant, the dura mater being raised, at the time of the diaftole, and in the fyftole it fell down. After having lacerated the dura mater, I broke, prick'd, and irriated the cortical fubstance; but the animal gave no fign of pain. I plung'd the inftrument into the medulla of the brain, and the dog began to cry but I did not perceive him to be in great aggitation. I then let him loofe, the better to obferve his convulfions. Numb. I Vol. H.

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He began to walk about the room, but as if he had been
drunk, or stupid. I again plung'd the inftrument into the
medulla, upon which he made a great noise, but continued
to walk without falling into convulfions. A little after he
walk'd about the room for fome mintues, like a horse that is
turning a mill; he often fell, fometimes on one fide, fometimes
on the other, and then rifing again, he ftill continued to
I walk in a circle. A few minutes afterwards he fell on a
fudden; his whole body was convulfed. I raised him up, but
he could not ftand on his legs. I placed him on the table,
and his body bent in a femi-circle, and the muscles of the
oppofite part being feperated, he cried when they ftruck
him. I then plung'd the inftrument through the brain into
the cerebellum. Immediately his whole body was seized
with convulfions, and there was principally a contortion of
the neck, and the hinder part of the fpine of the back. This
agitation having ceafed for fome moments, he feem'd to
shake himself twice or thrice, in the fame manner as dogs
ufually do, when they come out of the water.
At length
falling, by little and little, into extreme weakness, neither
blows nor any other iritation cou'd excite him; and, after a
fhort ceffation of the convulfions and fpafins, and fetching
feveral deep refpirations, he died.

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The former experiment caufed me to try another. After having taken away, by means of the trepan, a round piece of of the skull of a young dog, I irritated the dura mater with the point of a knife, as in the former experiment, and I dropp'd some oil of vitriol thereon; but the animal discovered no fign of pain, though the oil of vitriol corroded the parts, as far as it reached. While the oil of vitriol was fwimming upon the dura mater, the dog fuddenly raised up his head, and look'd about him: the blood which ran plentifully from the great artery of the lacerated dura mater hinder'd

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me from making experiments on the medulla itfelf, by dropping oil of vitriol thereon. I then plung'd the knife into the right fide of the brain, of which the dog was very fenfible, and fell into convulfions. I afterwards thruft the knife through the brain, into the cerebellum, and immediately the animal was feized with terrible convulfions, in every part of his body, infomuch that there was not a fingle muscle, but what was in motion. When I had cut the brain towards the bafis on each fide, and had stirr'd the cerebellum about, so as kind of foft pulp, the heart beat strongly for fome minutes, and at the fame time the brain was forced out, through the perforation, in a large quantity.

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N. B. Thefe experiments were received before the publication of our laft Number, but could not be then inferted - for want of room. This omiffion, therefore, we hope will be excus'd by our ingenious correfpondent, for whom we shall hereafter express all possible regard.

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S I was reading the papers one evening in -S cof

A fee-house, an advertisement caught my eye, in

which two gentlemen of great worth and learning, who have done the highest service to the caufe of christianity, declare to have been no ways concern'd in the publishing a late famous pamphlet, intitled, Free and Candid Difquifitions, &c. As this work has excited the attention of the learned of every denomination, it is not in the leaft furprizing, that even the very recollection of it fhould make so strong an impreffion on my mind, as to occafion next night the following vifion.Methought I was all on a fudden in Westminster-Abbey, and on looking towards the

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choir I faw it fill'd with a vaft crowd of people, who exprefs'd the utmost attention, for there was fcarce a murmur to be heard, fo abfolute was the filence. The novelty of the fight made me immediately join the multitude; and on my enquiring the cause of there being fo great a concourse, I was inform'd in a low whisper, by a grave elderly man, who ftood near me, "That the merits of the Free " and Candid Difquifitions were inftantly to be determined." At the east end of the choir, on a throne of pure gold, a perfonage of a most venerable aspect fat as judge: on her forehead was wrote in large capitals, The Sacramental Test. Í immediately knew her to be the CHURCH OF ENGLAND. On her right hand fat a matron who fhew'd the greatest chearfulnefs, and at the fame time the utmoft condefcenfion and humility in her countenance: her name was ORTHODOXY. On her breaft, next her heart, was placed fomething of a globular form, which emitted a light far fuperior to the luftre of our modern ftars, or the most fparkling diamonds, fo that my eyes were aimoft dazzled with beholding it. After viewing it as steadfastly as I could, I discover'd the following words written under it by way of motto, viz. The eye of Faith. At the left fide was CEREMONY, decently habited in a furplice, and bearing in her hand the cross in baptifm.

On a fignal given, immediately entered an odd fantastic figure, who 'feem'd to be very captious, difcontented, and felf-conceited. The garment fhe wore was of fo notable a contexture that it never appeared one minute to be the fame, but continually diversified itself into every form and colour that imagination can fuggeft. The name of this perfon was ALTERATION. The *** and ***, and the Well-wishers to the University of Oxford, and rofy justices, and fat pluralists followed her as partizans and attendants, In her arms fhe held a motley book, intitled, The Free and Candid Difquifitions, of which she appear'd extremely fond,

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