...parental tpye." (P. 12.) " 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." (P. 167.) And Mr. Darwin also recognises...

...strong, will have been neglected, and will have tended to disappear.* 1153. 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. But whenever we have the means of instituting...

...accidental. " Our ignorance (says Mr. Darwin) 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 parent ;"* and again, " variation is a very slow process,...

...sea-shore. Swrmmoury. — 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. But whenever we have the means of instituting...

...sea-shore. Summary. — 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. But whenever we have the means ot instituting...

...also says that " hdlut, ill producing constitutional differences, and use in strengihening and disuie in weakening and diminishing organs, seem to have been more potent in their effects." When, however, neither use nor disuse appear to operate sufficiently to justify Lamarck's...

...between varieties of the same species, and the greater differences between species of the same genus. The external conditions of life, as climate and food,...diminishing organs, seem to have been more potent in their effects. Homologous parts tend to vary in the same way, and homologous parts tend to cohere. Modifications...

...life, as climate, food, &c., seem to have induced some slight modifications." He also says, that " habit, in producing constitutional differences, and...diminishing organs, seem to have been more potent in their effects." When, however, neither use nor disuse appears to operate sufficiently to justify Lamarck's...

...mystery. Darwin said of it: 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 has varied." In another place he remarks: When we reflect on the millions of buds which many trees...

...(Summary of Chap. V.) :— "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...diminishing organs, seem to have been more potent in their effects," And finally, as if to prevent all possible misconception. Mr. Darwin concludes his Chapter...