50 



INHERITANCE IN POULTRY. 



only one-third that of its father. The loug-tailed characteristic of the male 

 has been inherited, but in a reduced form. 

 Second hybrid generation. Still immature. 



3. Foot Feathering. — First hybrid generation. Of the 7 individuals all 

 have the feet feathered (" booted " ) and the females are provided with a 

 " vulture hock." The feathering is usually less than in the Cochin. 



Second hybrid generation. Among the 55 individuals of this generation all 

 degrees of foot feathering were obtained. Eight cases are recorded as 

 " heavily booted," 27 as "booted," 13 as slightly booted, and 7 as non- 

 booted. The classification is arbitrary aud therefore the exact proportions 

 not significant. The important outcome is that a good share of this genera- 

 tion is essentially clean-legged like the Tosa-fowl ancestor, aud an approxi- 

 mately equal proportion is heavily booted like the Cochin ancestor, while 

 the rest are feathered to an intermediate degree like the parents. 



4. Foot Color. — This has a curious way of changing during the early 

 months of the individual. White is often represented in the young by 

 yellow. A ' ' slate blue " or " bluish black ' ' occurs ; this may be a form of 

 the willow from which yellow has been extracted. 



First hybrid generation. Of 5 individuals two are recorded as white, one 

 as yellow, one as willow, and one as slate blue. Here is practically equal 

 frequency of the light and dark types. 



Second hybrid generation. Fifty-three individuals give the following dis- 

 tribution of foot color : 



This shows a practical equivalence of light and dark foot colors as in the 

 first generation. The interpretation of this result must be left for later 

 studies. 



5. Correlation of Characteristics. — Considering only the three 

 characteristics of plumage color, booting, and foot color, and assuming that 

 game color and boot are dominant and light and dark feet equally apt to 

 occur, we find the following calculated and actual frequency of each combi- 

 nation (actual percentage is in italics) : 



Booted a..«^ ^s..,\^^^i:i:;::::::::::::^ f^% 



-booted 18.7^ n.^^^:^i--:::-i^ t% 



White plumage.. 



Non-booted 6.2^ 



,«^ /Light feet 3.1^ 0.0^ 



^•^t Dark feet 3.l!« I.PjC 



