76 



THE NEXT GENERATION 



to be done with ordinary horned mates. The results were 

 unexpected certainly, and the owners were astonished. So 

 many of his descendants had no horns that in the course 

 of time there was established a race of hornless cattle from 



horned ancestors. 



Darwin tells us that 

 short-legged Ancon sheep 

 started in the same way 

 that in a herd of long- 

 legged sheep there ap- 

 peared one day this one 

 little lamb with short legs ; 

 that it lived to grow up 

 and become an ancestor ; 

 that among its own de- 

 scendants there were sev- 

 eral short-legged sheep. 

 These could not jump 

 fences and escape from 

 the fold ; therefore sheep 

 raisers selected them as 

 ancestors of succeeding 

 generations. As a result, 

 short-legged sheep are 



A CASE OF POLYDACTYLISM 



The boy's father had twelve fingers and twelve 

 toes, but the fingers were boneless. (Photo- 

 graph by Professor Scott.) (From " Heredity in 

 Relation to Eugenics," by C. B. Davenport) 



now the chosen type. 

 They are found the world over, and appreciated everywhere. 

 Mr. Poulton describes a family of cats with an extra toe. 

 The first one came as a mutation. After this, for seven gen- 

 erations of that family, the feet of all the kittens and cats were 

 faithfully examined, and, by actual count, the majority of them 

 were found to be supplied with one or two extra toes, making 

 six or seven toes on each foot. 



