Studies of Inheritance in Guinea-Pigs and Rats e-bog

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. For several years I have been engaged in studies of heredity in guinea-pigs. In the course of these studies all the common varieties of guinea-pigs have been investigated by the method Of experimental breeding and something has been learned concerning their inter relationships and probable mode of origin. The actual origin of most of these varieties is, however, unknown, as is true also concerning most varieties Of domesticated animals. One or two varieties have.