 Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parents.  The American Naturalist - Page 811909Full view - About this book
 | Margaret L. Kirby - Medical - 2007 - 288 pages
...intentionally left blank Co-authored with Fred Schachat Evolutionary Developmental Biology of the Heart Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less,... | |
 | Homeopathy - 1872 - 614 pages
...are now different from what they formerly were." — Orig. of Species, p. 80 ; and p. 150 he says : " Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less,... | |
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