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
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Pagina v
... Annelids and arthro- pods : The external locomotive skeleton leads to temporary rapid advance , but fails of the goal . - Its disadvantages . - Vertebrates : The internal loco- motive skeleton leads to backbone and brain . - Reasons for ...
... Annelids and arthro- pods : The external locomotive skeleton leads to temporary rapid advance , but fails of the goal . - Its disadvantages . - Vertebrates : The internal loco- motive skeleton leads to backbone and brain . - Reasons for ...
Pagina 57
... annelids and culminating in insects . The molluscan and articulate lines , though divergent , are of great importance to us as throwing a certain amount of light on vertebrate development ; and still more as showing how a certain line ...
... annelids and culminating in insects . The molluscan and articulate lines , though divergent , are of great importance to us as throwing a certain amount of light on vertebrate development ; and still more as showing how a certain line ...
Pagina 61
... annelids . Of these our common earthworm is a good example , and near them belong - the leeches . But the marine annelids , of which nereis , or a clam - worm , is a good example , are more typical . They are often quite large , a foot ...
... annelids . Of these our common earthworm is a good example , and near them belong - the leeches . But the marine annelids , of which nereis , or a clam - worm , is a good example , are more typical . They are often quite large , a foot ...
Pagina 62
... ( ANNELID ) . FROM EHLERS . -I -po LANG , Front and hind end seen from dorsal surface . fa , fp , fe , feelers ; a , eye ; k , gill ; p . parapodia ; ac , anal cirri . cles . These latter have been grouped in the four quad- rants , a much ...
... ( ANNELID ) . FROM EHLERS . -I -po LANG , Front and hind end seen from dorsal surface . fa , fp , fe , feelers ; a , eye ; k , gill ; p . parapodia ; ac , anal cirri . cles . These latter have been grouped in the four quad- rants , a much ...
Pagina 63
... ANNELID . LANG . dp and up , dorsal and ventral halves of parapodia ; b and ac , bristles ; k , gill ; de and vc , feelers ; rm , lateral muscles ; Im , longitudinal muscles ; vd , dorsal blood - vessel ; vo , ventral blood - vessel ...
... ANNELID . LANG . dp and up , dorsal and ventral halves of parapodia ; b and ac , bristles ; k , gill ; de and vc , feelers ; rm , lateral muscles ; Im , longitudinal muscles ; vd , dorsal blood - vessel ; vo , ventral blood - vessel ...
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