The Whence and the Whither of Man: A Brief History of His Origin and Development Through Conformity to Environment; Being the Morse Lectures of 1895W. Blackwood and Sons, 1896 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 59
Pagina 5
... structure to all the rest , shortens . The cells and tis- sues which in other twigs turn into green leaves here become the petals and other organs of the rose or violet . Let us suppose for a moment that every rose and violet required a ...
... structure to all the rest , shortens . The cells and tis- sues which in other twigs turn into green leaves here become the petals and other organs of the rose or violet . Let us suppose for a moment that every rose and violet required a ...
Pagina 20
... structure . We do not hesitate to call it a The whale makes us more trouble ; it certainly looks remarkably like a fish . But the fin of its tail is hori- zontal , not vertical . Its front flippers differ altogether from the ...
... structure . We do not hesitate to call it a The whale makes us more trouble ; it certainly looks remarkably like a fish . But the fin of its tail is hori- zontal , not vertical . Its front flippers differ altogether from the ...
Pagina 21
... structure and grade of organization . But this radiate structure proved again to be largely a matter of adaptation . Practically all animals having a heavy calcareous shell were grouped with the snails and oysters as mol- lusks . But ...
... structure and grade of organization . But this radiate structure proved again to be largely a matter of adaptation . Practically all animals having a heavy calcareous shell were grouped with the snails and oysters as mol- lusks . But ...
Pagina 22
... structure , while the higher reptiles closely approached that the amphibia stood far nearer the fish in general birds . Then it was noticed that our common fish formed a fairly well - defined group , but that the ganoids , including the ...
... structure , while the higher reptiles closely approached that the amphibia stood far nearer the fish in general birds . Then it was noticed that our common fish formed a fairly well - defined group , but that the ganoids , including the ...
Pagina 23
... structure , which are permanent in lower and older members of the same group . em- You remember that the fin on the tail of a fish is as a rule bilobed . Now the backbone of a perch or cod ends at a point in the end of the tail opposite ...
... structure , which are permanent in lower and older members of the same group . em- You remember that the fin on the tail of a fish is as a rule bilobed . Now the backbone of a perch or cod ends at a point in the end of the tail opposite ...
Altre edizioni - Visualizza tutto
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1896 |
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1897 |
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1899 |
Parole e frasi comuni
amoeba amphibia anatomical ancestors animal kingdom annelid apes appear appetite attained become birds body brain cavity cells cerebrum Cheaper Edition church conformity to environment conscious Crown 8vo degeneration Demy 8vo digestive dominant ectoderm embryo evolution experience eyes Fcap fish functions ganglion gastrula germ-plasm give groups higher forms highest human hydra Illustrations increase individual insect instinct intelligence laws layer legs living locomotion lower mammals man's marsupial ment mental mind mode modified mollusks moral muscles muscular natural selection nerve nervous system never notochord nutriment organs oxygen parapodia perception perivisceral Portrait Post 8vo primitive probably Professor progress protoplasm protozoa purely reflex action reproductive reptiles result schematic worm Scotland segments selfish sense-organs sequence skeleton species stage structure struggle surface survive swimming theory tion true truth turbellaria University of Edinburgh variation velopment vertebral column vertebrates vols volvox WHITHER young