The Study of Animal LifeScribner, 1892 - Всего страниц: 375 |
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Стр. 8
... tree- frogs and lizards , and above all the ancient and extinct flying reptiles , have reached towards . Interesting , too , are the exceptions — ostriches and penguins , whales and bats , the various animals which have become burrowers ...
... tree- frogs and lizards , and above all the ancient and extinct flying reptiles , have reached towards . Interesting , too , are the exceptions — ostriches and penguins , whales and bats , the various animals which have become burrowers ...
Стр. 10
... tree whose branches , though originating at different levels , are all strong and perfect . Of the shelled animals or Molluscs there are three great sub - classes , ( a ) the cuttlefishes and the pearly nautilus , ( b ) the snails and ...
... tree whose branches , though originating at different levels , are all strong and perfect . Of the shelled animals or Molluscs there are three great sub - classes , ( a ) the cuttlefishes and the pearly nautilus , ( b ) the snails and ...
Стр. 11
... tree of life which has many beautiful leaves , but has never risen far . Beyond this our unaided eyes will hardly lead us , yet the pond - water held between us and the light shows vague specks like living motes , the firstlings of life ...
... tree of life which has many beautiful leaves , but has never risen far . Beyond this our unaided eyes will hardly lead us , yet the pond - water held between us and the light shows vague specks like living motes , the firstlings of life ...
Стр. 12
... Tree The small branches in the centre indicate the classes of " worms ; the letters P , B , and S indicate the positions of Peripatus . Balanoglossus , and Sphenodon or Hatteria respectively . There is of course no doubt as to the fact ...
... Tree The small branches in the centre indicate the classes of " worms ; the letters P , B , and S indicate the positions of Peripatus . Balanoglossus , and Sphenodon or Hatteria respectively . There is of course no doubt as to the fact ...
Стр. 13
... tree with branches springing from different levels , each branch again bearing twigs some of which rise higher than the base of the branch above . A perfect scheme of this sort might not only express the facts of structure , it might ...
... tree with branches springing from different levels , each branch again bearing twigs some of which rise higher than the base of the branch above . A perfect scheme of this sort might not only express the facts of structure , it might ...
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Часто встречающиеся слова и выражения
action activity adult Amphibians ants backboned become begin Biology birds bivalves body brain called carbonic carbonic acid Chambers's Encyclop changes characteristic ciliated colony colour complex corals crab creatures crustaceans cuttlefish Darwin division of labour earth Echinoderms egg-cell eggs embryo Encyclopædia Encyclopædia Britannica energy Erasmus Darwin evolution Evolution of Sex fact female fertilised fishes food-canal freshwater frog function grow habit Haeckel heredity higher animals hydroid individual influence Infusorians insects instincts jellyfish kinds lancelet larvæ less living matter Lond male mammals medusoids molluscs Natural History natural selection naturalists nervous nest notochord observed offspring organism origin ovum parasites parents plants Prof progress Protists protoplasm Protozoa recognise regard reproductive cells reptiles result sea-anemones seems shells simplest animals skin sometimes species spermatozoa spiders sponges strange structure struggle for existence substances suggest surroundings theory tion tissues units variations Vertebrate worms young Zoea zoology
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Стр. 339 - THERE was a child went forth every day, And the first object he look'd upon, that object he became, And that object became part of him for the day or a certain part of the day, Or for many years or stretching cycles of years.
Стр. 174 - I believe a leaf of grass is no less than the journey-work of the stars, And the pismire is equally perfect, and a grain of sand, and the egg of the wren, And the tree-toad is a...
Стр. 297 - Doing this, and making the requisite addition, the formula finally stands thus :—Evolution is an integration of matter and concomitant dissipation of motion; during which the matter passes from an indefinite, incoherent homogeneity to a definite, coherent heterogeneity ; and during which the retained motion undergoes a parallel transformation.
Стр. 44 - When we reflect on this struggle, we may console ourselves with the full belief, that the war of nature is not incessant, that no fear is felt, that death is generally prompt, and that the vigorous, the healthy, and the happy survive and multiply.
Стр. 262 - It scarcely breathes with its one lung (the other shrivelled and abortive) ; it is passive to the sun and shade, and is cold or hot like a stone ; yet " it can outclimb the monkey, outswim the fish, outleap the zebra, outwrestle the athlete, and crush the tiger.
Стр. 289 - Fifthly, from their first rudiment, or primordium, to the termination of their lives, all animals undergo perpetual transformations, which are in part produced by their own exertions in consequence of their desires and aversions, of their pleasures and pains, or of irritations, or of associations; and many of these acquired forms or propensities are transmitted to their posterity.
Стр. 33 - 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.
Стр. 24 - It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organized creatures.
Стр. 23 - Earth-worms, though in appearance a small and despicable link in the chain of Nature, yet, if lost, would make a lamentable chasm.
Стр. 289 - As air and water are supplied to animals in sufficient profusion, the three great objects of desire, which have changed the forms of many animals by their exertions to gratify them, are those of lust, hunger and security.