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 7
... miles from the nearest stream or marsh , and , as the Downs rise to 800 feet , their average height is fully 200 feet above other water , so that the aquatic animals and plants found therein must certainly have been " transported uphill ...
... miles from the nearest stream or marsh , and , as the Downs rise to 800 feet , their average height is fully 200 feet above other water , so that the aquatic animals and plants found therein must certainly have been " transported uphill ...
Pagina 8
... miles to the south - west , but does not fruit there ; the nearest natural station for it seems to be in the slightly brackish marshes near Emsworth , four miles to the south . Potamogeton natans can probably be found within three miles ...
... miles to the south - west , but does not fruit there ; the nearest natural station for it seems to be in the slightly brackish marshes near Emsworth , four miles to the south . Potamogeton natans can probably be found within three miles ...
Pagina 16
... during 1885 ; the pond , situate in the vicinity of Todos Santos Bay , Lower California , was only about ten years old , a few inches deep , and about six feet 2 across , and for miles there was no natural 16 THE DISPERSAL OF SHELLS .
... during 1885 ; the pond , situate in the vicinity of Todos Santos Bay , Lower California , was only about ten years old , a few inches deep , and about six feet 2 across , and for miles there was no natural 16 THE DISPERSAL OF SHELLS .
Pagina 17
... miles there was no natural surface water . ' Limnæa macrostoma , according to Dr. Ingalls ( who communicated the fact to Mr. Binney in 1860 ) , not seen elsewhere within twenty miles , seems to have suddenly appeared in a pool , about ...
... miles there was no natural surface water . ' Limnæa macrostoma , according to Dr. Ingalls ( who communicated the fact to Mr. Binney in 1860 ) , not seen elsewhere within twenty miles , seems to have suddenly appeared in a pool , about ...
Pagina 35
... miles . Those molluscs which habitually float , foot uppermost , on the under - surface of the water are sometimes drifted along by steady currents . Mr. George Roberts has remarked that Limnæa peregra " frequently allows itself to ...
... miles . Those molluscs which habitually float , foot uppermost , on the under - surface of the water are sometimes drifted along by steady currents . Mr. George Roberts has remarked that Limnæa peregra " frequently allows itself to ...
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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