The Dispersal of Shells: An Inquiry Into the Means of Dispersal Possessed by Fresh-water and Land MolluscaK. Paul, Trench, Trübner & Company, Limited, 1893 - 291 pagini |
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Pagina vii
... seem at first sight to be but trifles and accidents in nature's workshop , but which are really the tools with which she produces some of her most striking results . It is owing to such trifling occur- rences as the occasional ...
... seem at first sight to be but trifles and accidents in nature's workshop , but which are really the tools with which she produces some of her most striking results . It is owing to such trifling occur- rences as the occasional ...
Pagina 3
... seems , if left to their own endeavours , would generally find great difficulty in extending their range beyond the limits of their own . river - basin , for the dry land obviously presents a for- midable barrier to these animals , and ...
... seems , if left to their own endeavours , would generally find great difficulty in extending their range beyond the limits of their own . river - basin , for the dry land obviously presents a for- midable barrier to these animals , and ...
Pagina 4
... seems completely cut off from every other river - system of the same country , and still more complete , of course ... seem practically incapable of migrating voluntarily beyond the limits of their own element and its imme- diate ...
... seems completely cut off from every other river - system of the same country , and still more complete , of course ... seem practically incapable of migrating voluntarily beyond the limits of their own element and its imme- diate ...
Pagina 5
... seem to possess a " mysterious faculty " of finding their way to the most unlikely habitations . Dispersal by some means must be constantly going on . That almost every isolated cattle - pond which a farmer digs perhaps near the middle ...
... seem to possess a " mysterious faculty " of finding their way to the most unlikely habitations . Dispersal by some means must be constantly going on . That almost every isolated cattle - pond which a farmer digs perhaps near the middle ...
Pagina 8
... seems to be in the slightly brackish marshes near Emsworth , four miles to the south . Potamogeton natans can probably be found within three miles . This pond is overshadowed by a large oak , and supplied by dew and rain off the road ...
... seems to be in the slightly brackish marshes near Emsworth , four miles to the south . Potamogeton natans can probably be found within three miles . This pond is overshadowed by a large oak , and supplied by dew and rain off the road ...
Alte ediții - Afișează-le pe toate
The Dispersal of Shells: An Inquiry Into the Means of Dispersal Possessed by ... Harry Wallis Kew Vizualizare completă - 1893 |
The Dispersal of Shells: An Inquiry Into the Means of Dispersal Possessed by ... Harry Wallis Kew Vizualizare completă - 1893 |
The Dispersal of Shells: An Inquiry Into the Means of Dispersal Possessed by ... Harry Wallis Kew Vizualizare completă - 1893 |
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8vo Parchment Library A. E. WAITE alive animals aquatic attached Binney birds bivalves British Conchology Bulimus carried Cheap Edition clinging colony Conch Conchology creatures Crown 8vo Darwin distances distribution Dreissena polymorpha eggs Elzevir 8vo Parchment English epiphragm F. W. NEWMAN fauna Fcap feet Fifth Edition floating Fourth Edition fresh-water shells Frontispiece garden Grammar Helix Hist Illustrations India introduced islands J. G. Jeffreys Jeffreys Journ kinds Land and Fresh-water land-shells large numbers larvæ Limnæa peregra living Lyell means of dispersal miles molluscs mussel Naturalist numbers observed occasionally occurred Origin Parchment or cloth Philosophical Library Pisidia Planorbis Planorbis carinatus plants pond Portrait Post 8vo probably Professor remarked rivers Sanskrit Science Gossip Second Edition seems seen slugs Small 8vo snails species specimens Sphærium corneum Standen terrestrial Testacella Third Edition tion toes Translated transportal trees Trübner's Oriental Series Vellum vols water-beetles Zoologist
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