A Textbook in General ZoologyGinn, 1906 - 462 páginas |
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Términos y frases comunes
abdomen adapted adult alimentary canal allied American animals antennæ appendages artery auricle beneath birds blastula blood blood-vessels body body-cavity branches burrows butterflies called carbon cavity cells cephalothorax CHAPTER cilia clam cloaca color crayfish Crustacea Darwin digestive dorsal earthworm eggs enlarged external eyes feed female fishes fresh-water frog ganglion gastrula gills glands habit hatch head inches insects intestine larva larvæ legs live lobster locust male mammals mandibles mantle mantle-cavity mass maxillæ maxillipeds mesenteries metamorphosis molting mouth muscles mussel Natural nephridia nephridium nest notochord opening organs oxygen pair parasite pass perch pharynx Photograph phylum plants polyps posterior Professor protected radial region reptiles resemble Rocky Mountain locust secretion shell side skin somites species spermatozoa sponge stage starfish stomach structure substance surface tail teeth tentacles thorax tion tube tube-feet usually valves ventral vertebrate wings young zoology
Pasajes populares
Página 192 - Year after year beheld the silent toil That spread his lustrous coil; Still, as the spiral grew, He left the past year's dwelling for the new, Stole with soft step its shining archway through, Built up its idle door, Stretched in his last-found home, and knew the old no more.
Página 16 - Lord cometh, for it is nigh at hand ; a day of darkness and of gloominess, a day of clouds and of thick darkness, as the morning spread upon the mountains: a great people and a strong; there hath not been ever the like, neither shall be any more after it, even to the years of many generations.
Página 15 - THE poetry of earth is never dead : When all the birds are faint with the hot sun, And hide in cooling trees, a voice will run From hedge to hedge about the new-mown mead ; That is the Grasshopper's — he takes the lead In summer luxury, — he has never done With his delights, for when tired out with fun, He rests at ease beneath some pleasant weed.
Página 27 - To-day I saw the dragon-fly Come from the wells where he did lie. "An inner impulse rent the veil Of his old husk : from head to tail Came out clear plates of sapphire mail. "He dried his wings: like gauze they grew: Thro' crofts and pastures wet with dew A living flash of light he flew.
Página 408 - They say, The solid earth whereon we tread In tracts of fluent heat began, And grew to seeming-random forms, The seeming prey of cyclic storms, Till at the last arose the man...
Página 105 - Owing to this struggle, variations, however slight and from whatever cause proceeding, if they be in any degree profitable to the individuals of a species, in their infinitely complex relations to other organic beings and to their physical conditions of life, will tend to the preservation of such individu30 als, and will generally be inherited by the offspring.
Página 395 - The object and purpose of this act is to aid in the restoration of such birds in those parts of the United States adapted thereto where the same have become scarce or extinct...
Página 364 - Rapid and loud, and drawing homeward soon ; And then, the sober chiding of your tone, As there ye sit, from your own roofs arraigning My trespass on your haunts, so boldly done, Sounds like a solemn and a just complaining...
Página 103 - I should premise that I use the term Struggle for Existence in a large and metaphorical sense, including dependence of one being on another, and including (which is more important) not only the life of the individual, but success in leaving progeny.
Página 65 - Obedience ! for so work the honey-bees, Creatures that by a rule in nature teach The art of order to a peopled kingdom. They have a king and officers of sorts ; Where some, like magistrates, correct at home, Others, like merchants, venture trade abroad, Others, like soldiers, armed in their stings, Make boot upon the summer's velvet buds, Which pillage they with merry march bring...