In almost every country family there is a sub-family of dogs and my father's household was no exception to this rule. When I was a boy, there was born into our sub-family a pup with a short stump of tail, identical in proportion to his father's, whose tail had been cut off to suit the prevailing style.
This fact attracted my attention very strongly, and in looking over my research work I can see it has had great influence on my opinion as to variation in species and the law of heredity; to the end that I believe acquired defects in teeth as well as in tails can be inherited from ancestry.
DARWIN AND HEREDITY.
De Vries, Haeckel and others, in recent work, have made advances in working out details of Darwin's theories of inheritance, variation and natural selection, but none have cited evidence to disprove his main position; on
FLETCHER MH. WHAT IS THE EFFECT ON PROGENY OF THE LOSS OF TEETH IN ANCESTRY?. JAMA. 1906;XLVII(3):191-194. doi:10.1001/jama.1906.25210030033002i