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 81
Pagina xii
... muscular system cannot develop a its work until some sort of a digestive systen arisen to furnish nutriment , any more than a s engine can run without fuel . And a brain is of n until muscle and sense - organs have appeared . This ...
... muscular system cannot develop a its work until some sort of a digestive systen arisen to furnish nutriment , any more than a s engine can run without fuel . And a brain is of n until muscle and sense - organs have appeared . This ...
Pagina 13
... muscle or pluck would make all the difference between winning and losing the prize . of insect in a Similarly the million or more young of any species given area may be said to run a race of which the prize is life , and the losing of ...
... muscle or pluck would make all the difference between winning and losing the prize . of insect in a Similarly the million or more young of any species given area may be said to run a race of which the prize is life , and the losing of ...
Pagina 19
... muscular , digestive , ner- vous , etc. - they give us a very fair idea of what our ancestor at each stage must have been . this balance and relative development of the different systems , that is , whether an animal is more reproduc ...
... muscular , digestive , ner- vous , etc. - they give us a very fair idea of what our ancestor at each stage must have been . this balance and relative development of the different systems , that is , whether an animal is more reproduc ...
Pagina 32
... muscular cells . Prick it with a needle and it con- tracts . It recognizes its food even at a microscopic. CHAPTER II PROTOZOA TO WORMS: CELLS, TISSUES, AND ORGANS Amoeba: Its anatomy and physiology -Development of the cell.
... muscular cells . Prick it with a needle and it con- tracts . It recognizes its food even at a microscopic. CHAPTER II PROTOZOA TO WORMS: CELLS, TISSUES, AND ORGANS Amoeba: Its anatomy and physiology -Development of the cell.
Pagina 38
... muscles are contracted , the pressure of the water length- ens the body and tends to extend the tentacles . On the ... muscle , exciting its contraction . But there are also nerve - fibrils connect- ing the different ganglion cells , so ...
... muscles are contracted , the pressure of the water length- ens the body and tends to extend the tentacles . On the ... muscle , exciting its contraction . But there are also nerve - fibrils connect- ing the different ganglion cells , so ...
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