...researches, absolutely unknown. The state of knowledge in that regard is well exemplified by Darwin's remark, That the act of crossing in itself gives an impulse...characters, has never, I believe been hitherto proved (Ic, 2:13). Darwin recognized, as did most of the breeders before Mendel, that As a general rule, crossed...

...often revert to both or to one of their parent- forms, after an interval of from two to seven or eight, or, according to some authorities, even a greater...itself gives an impulse towards reversion, as shown by tho reappearance of long-lost characters, has never, I believe, been hitherto proved. The proof lies...

...often revert to one or both of their parent forms, after an interval of from two to seven or eight, or, according to some authorities, even a greater...gives an impulse towards reversion, as shown by the appearance of long-lost characters, has never I believe been hitherto proved. The proof lies in certain...

...direct cause of Reversion," and says: "But that the act of crossing in itself gives an impulse toward reversion, as shown by the reappearance of long-lost...characters, has never, I believe, been hitherto proved." His line of evidence, however, is different from that here presented, and embraces a different series...

...direct cause of Reversion," and says : " But that the act of crossing in itself gives an impulse toward reversion, as shown by the reappearance of long-lost...characters, has never, I believe, been hitherto proved." His line of evidence, however, is different from that here presented, and embraces a different series...

...often revert to both or to one of their parent-forms, after an interval of from two to seven or eight, or, according to some authorities, even a greater...proof lies in certain peculiarities, which do not characterise the immediate parents, and therefore cannot have been derived from them, frequently appearing...

...red, becoming black afterwards ; and the mouse-coloured foal of a chestnut mare may become chestnut. " The act of crossing in itself gives an impulse towards reversion," as seen by characters appearing in the young that had not been seen in either pure breed for generations....

...often revert to both or to one of their parent- forms, after an interval of from two to seven or eight, or, according to some authorities, even a greater...proof lies in certain peculiarities, which do not characterise the immediate parents, and therefore cannot have been derived from them, frequently appearing...

...often revert to both or to one of their parent forms, after an interval of from two to seven or eight, or, according to some authorities, even a greater...towards reversion, as shown by the reappearance of long- lost characters, has never, I believe, been hitherto proved. The proof lies in certain peculiarities,...

...often revert to both or to one of their parent forms, after an interval of from two to seven or eight, or, according to some authorities, even a greater...that the act of crossing in itself gives an impulse toward reversion, as shown by the reappearance of long-lost characters, has never, I believe, been...