The Study of Animal Life |
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Page x
... animals - 2 . The relation of the simplest animals to those which are more com- plex - 3 . The parts of the animal body CHAPTER XII THE LIFE - HISTORY OF ANIMALS Pages 167-183 1. Modes of reproduction - 2 . Divergent modes — 3 ...
... animals - 2 . The relation of the simplest animals to those which are more com- plex - 3 . The parts of the animal body CHAPTER XII THE LIFE - HISTORY OF ANIMALS Pages 167-183 1. Modes of reproduction - 2 . Divergent modes — 3 ...
Page 8
... animals from the simplest upwards , we find a gradual increase in the number of those which live on land . The lowest animals are mostly aquatic the sponges and stinging - animals wholly so ; worm - like forms which are truly ...
... animals from the simplest upwards , we find a gradual increase in the number of those which live on land . The lowest animals are mostly aquatic the sponges and stinging - animals wholly so ; worm - like forms which are truly ...
Page 11
... simplest animals or Protozoa , almost all of which have remained mere unit specks of living matter . It is easy to write this catalogue of the chief forms of life , and yet easier to read it : to have the tree of life as a living ...
... simplest animals or Protozoa , almost all of which have remained mere unit specks of living matter . It is easy to write this catalogue of the chief forms of life , and yet easier to read it : to have the tree of life as a living ...
Page 13
... simple to complex , but this will express only our most generalised conceptions . For within each class there is great variety , each has its own masterpieces . Thus the simplest animals are often cased in shells of flint or lime whose ...
... simple to complex , but this will express only our most generalised conceptions . For within each class there is great variety , each has its own masterpieces . Thus the simplest animals are often cased in shells of flint or lime whose ...
Page 15
... animals , in which we all delight , is usually in form , or in colour , or in movement . Especially in the simplest animals , the beauty of form is often comparable to that of crystals ; witness the marvellous architecture in flint and ...
... animals , in which we all delight , is usually in form , or in colour , or in movement . Especially in the simplest animals , the beauty of form is often comparable to that of crystals ; witness the marvellous architecture in flint and ...
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Common terms and phrases
action activity adult Amphibians animals ants backboned become begin Biology birds bivalves body brain buds 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 energy Erasmus Darwin evolution Evolution of Sex fact female fertilised fishes food-canal freshwater frog function grow habit Haeckel heredity higher animals hydroid illustration individual influence Infusorians insects instincts jellyfish kinds lancelet larvæ less life-history living matter Lond male mammals mates medusoids molluscs Natural History natural selection naturalists nervous nest notochord observed offspring organism origin ovum parasites parents plants progress Protists protoplasm Protozoa recognise regard reproductive cells reptiles result Rotifers sea-anemones seems shells simplest animals skin sometimes species spermatozoa spiders sponges strange structure substances suggest surroundings theory tion tissues units variations Vertebrate worms young Zoea zoology