J. A. S. Watson 



61 



The individuals were similar in coat character, with one exception 

 ( $ No. 8), which was distinctly shorter haired. In F^ there was certainly 

 some form of segregation, individuals being obtained which approached 

 somewhat the Highland type and others which were almost or perhaps 

 quite as smooth as the average Angus (cf PL XII, fig. 2). The distribu- 

 tion, however, suggested a ratio considerably more complex than the 

 simple monohybrid one of 1 Rough : 2 Intermediate : 1 Smooth. With 

 regard to conformation, certain of the F.^ suggested rather strongly, in 

 one or other point, one of the parental types; but no statement beyond 

 this would be justifiable. 



(2) Horns and Colour. 

 Below follows a descriptive list of all the animals bred during the 

 course of the experiment, 



{a) Horns. 



The existing true breeding types of cattle are either (a) horned in 

 both sexes, or (h) polled in both. The third possible condition, which is 

 found for example in certain breeds of sheep, in which the males bear 

 horns while the females are hornless, is not known among living cattle, 

 though Major (4) has described this condition in skulls from the tertiary 

 deposits in Italy. 



* Fi No. 8 and No. 9 were purchased as yearlings. Their descent from a pedigreed 

 Angus bull and pure bred Highland cows was unquestionable, but their particular dams 

 could not be identified with certainty. The latter were probably red. 



