The Advancement of Science: Occasional Essays & AddressesMacmillan, 1890 - 387 páginas |
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Página 17
... egg to the adult condition . The aid which we here obtain depends on the following facts . Just as we suppose any ... egg - cell ( Fig . 1 ) . Gradu- ally passing through a series of more and more ela- borated conditions of structure ...
... egg to the adult condition . The aid which we here obtain depends on the following facts . Just as we suppose any ... egg - cell ( Fig . 1 ) . Gradu- ally passing through a series of more and more ela- borated conditions of structure ...
Página 18
... egg of a dog represents ( imperfectly , it is true ) in form and structure the earliest ancestors of the dog ; a few ... egg most valuable assistance in the attempt to reconstruct the genealogical tree . The history of the development of ...
... egg of a dog represents ( imperfectly , it is true ) in form and structure the earliest ancestors of the dog ; a few ... egg most valuable assistance in the attempt to reconstruct the genealogical tree . The history of the development of ...
Página 19
Occasional Essays & Addresses Sir Edwin Ray Lankester. The frog's egg first gives rise to a little aquatic creature with external gills and a tail - the tadpole- which gradually loses its gills and its tail and acquires in their place ...
Occasional Essays & Addresses Sir Edwin Ray Lankester. The frog's egg first gives rise to a little aquatic creature with external gills and a tail - the tadpole- which gradually loses its gills and its tail and acquires in their place ...
Página 20
... . 3 and right lower corner of Fig . 4 ) . The little creature which issues from the egg of this shrimp is known. FIG . 3 .-- Adult shrimp of the genus Peneus . FIG . 7. - Adult Sacculina ( female ) . 20 I DEGENERATION :
... . 3 and right lower corner of Fig . 4 ) . The little creature which issues from the egg of this shrimp is known. FIG . 3 .-- Adult shrimp of the genus Peneus . FIG . 7. - Adult Sacculina ( female ) . 20 I DEGENERATION :
Página 21
Occasional Essays & Addresses Sir Edwin Ray Lankester. which issues from the egg of this shrimp is known as the " Nauplius ... egg of which it originated . And now we are approaching the main point to In which I wish to draw the reader's ...
Occasional Essays & Addresses Sir Edwin Ray Lankester. which issues from the egg of this shrimp is known as the " Nauplius ... egg of which it originated . And now we are approaching the main point to In which I wish to draw the reader's ...
Otras ediciones - Ver todo
The Advancement of Science: Occasional Essays & Addresses Sir Edwin Ray Lankester Vista completa - 1890 |
The Advancement of Science: Occasional Essays & Addresses Sir Edwin Ray Lankester Vista completa - 1890 |
The Advancement of Science: Occasional Essays & Addresses Sir Edwin Ray Lankester Vista completa - 1890 |
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