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" The intermixture of distinct species is guarded against by the aversion of the individuals composing them to sexual union, or by the sterility of the mule offspring. It does not appear that true hybrid races have ever been perpetuated for several generations,... "
Life on the Earth: Its Origin and Succession - Стр. 186
авторы: John Phillips - 1860 - Страниц: 224
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Principles of Geology: Being an Attempt to Explain the Former Changes ..., Том 2

Sir Charles Lyell - 1832 - Страниц: 368
...beyond the defined limits being fatal to the existence of the individual. Sthly. The intermixture of distinct species is guarded against by the aversion...and not to the intermixture of hybrid with hybrid. 6thly. From the above considerations, it appears that species have a real existence in nature, and...
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Lectures on the Atheistic Controversy: Delivered in the Months of February ...

Benjamin Godwin - 1834 - Страниц: 314
...beyond the defined limits being fatal to the existence of the individual. " oth ly, The intermixture of distinct species is guarded against by the aversion...and not to the intermixture of hybrid with hybrid. "6thly, From the above considerations, it appears that species have a real existence in nature, and...
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Lectures on the Atheistic Controversy: Delivered in the Months of February ...

Benjamin Godwin - 1835 - Страниц: 410
...beyond the defined limits being fatal to the existence of the individual. " 5thly. The intermixture of distinct species is guarded against by the aversion...mules with individuals of pure species, and not to the intermixure of hybrid with hybrid. " 6thly. From the above considerations, it appears that species...
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Principles of Geology: Being an Inquiry how Far the Former Changes of ..., Том 1

Sir Charles Lyell - 1837 - Страниц: 568
...beyond the defined limits being fatal lo the existence of the individual. Sthly. The intermixture of distinct species is guarded against by the aversion...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...
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The Eclectic Magazine of Foreign Literature, Science, and Art, Том 19

1850 - Страниц: 600
...beyond the defined limits being fatal to the existence of the individual. " 5th. The intermixture of distinct species is guarded against by the aversion...relate to the crossing of mules with individuals of the pure species, and not to the intermixture of hybrid with hybrid. " 6th. From these considerations...
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The Quarterly Review, Том 86

William Gifford, Sir John Taylor Coleridge, John Gibson Lockhart, Whitwell Elwin, William Macpherson, William Smith, Sir John Murray IV, Rowland Edmund Prothero (Baron Ernle) - 1850 - Страниц: 612
...beyond the defined limits being fatal to the existence of the individual. ' 5th. The intermixture of distinct species is guarded against by the aversion...relate to the crossing of mules with individuals of the pure species, and not to the intermixture of hybrid with hybrid. ' 6th. From these considerations...
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The Quarterly Review, Том 86

William Gifford, Sir John Taylor Coleridge, John Gibson Lockhart, Whitwell Elwin, William Macpherson, William Smith, Sir John Murray IV, Rowland Edmund Prothero (Baron Ernle) - 1850 - Страниц: 608
...beyond the defined limits being fatal to the existence of the individual. '_5th. The intermixture of distinct species is guarded against by the aversion...relate to the crossing of mules with individuals of the pure species, and not to the intermixture of hybrid with hybrid. ' 6th. From these considerations...
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Eclectic Magazine: Foreign Literature, Том 19

John Holmes Agnew, Walter Hilliard Bidwell - 1850 - Страниц: 604
...beyond the defined limits being fatal to the existence of the individual. " 5th. The intermixture of distinct species is guarded against by the aversion...sterility of the mule offspring. It does not appear tiiat true hybrid races have ever been perpetmted for several generations, even by the assistance of...
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The Church of England quarterly review

1857 - Страниц: 520
...beyond the defined limits being fatal to the existence of the individual. " 5thly. The intermixture of distinct species is guarded against by the aversion...and not to the intermixture of hybrid with hybrid. "6thly. From the above considerations, it appears that species have a real existence in nature ; and...
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Creation's Testimony to Its God, Or The Accordance of Science, Philosophy ...

Thomas Ragg - 1858 - Страниц: 456
...beyond the defined limits being fatal to the existence of the individual. "5thly. The intermixture of distinct species is guarded against by the aversion...of man ; for the cases usually cited relate to the crossings of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid....
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