| Sir Charles Lyell - 1832 - 368 páginas
...least possible excess beyond the defined limits being fatal to the existence of the individual. Sthly. The intermixture of distinct species is guarded against...of man ; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.... | |
| Charles Lyell - 1833 - 366 páginas
...deviation can be obtained by continuing to alter the circumstances, though ever so gradually,—indefinite divergence, either in the way of improvement or deterioration,...of man; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.... | |
| Sir Charles Lyell - 1835 - 472 páginas
...may usually be effected in a brief period of time, after which no farther deviation can be obtained by continuing to alter the circumstances, though ever...of man ; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.... | |
| Benjamin Godwin - 1834 - 314 páginas
...possible excess beyond the defined limits being fatal to the existence of the individual. " oth ly, The intermixture of distinct species is guarded against...of man ; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.... | |
| sir Charles Lyell (bart.) - 1835 - 500 páginas
...may usually be effected in a brief period of time, after which no farther deviation can be obtained by continuing to alter the circumstances, though ever...of man; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.... | |
| Benjamin Godwin - 1835 - 384 páginas
...may usually be effected in a brief period of time, after which no further deviation can be obtained by continuing to alter the circumstances, though ever...of man ; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixure of hybrid with hybrid.... | |
| Sir Charles Lyell - 1837 - 568 páginas
...least possible excess beyond the defined limits being fatal lo the existence of the individual. Sthly. The intermixture of distinct species is guarded against...perpetuated for several generations, even by the assistance * E. R- A. Serres, Anatomic Compare du Cerveau, illustrated by numerous plates, tome i., 1824. of man... | |
| sir Charles Lyell (bart.) - 1840 - 504 páginas
...effected in a brief period of time, after which no farther deviation can be obtained by conr tinuing to alter the circumstances, though ever so gradually...of man; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.... | |
| 1850 - 600 páginas
...and the least excess beyond the defined limits being fatal to the existence of the individual. " 5th. The intermixture of distinct species is guarded against...of man ; for the cases usually cited relate to the crossing of mules with individuals of the pure species, and not to the intermixture of hybrid with... | |
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