130 Experimental Zoology 



plete in all cases; the nearest approach to typical Mendelian 

 inheritance is exhibited in the crest, but in the first generation it 

 is always reduced. The white color of the crest is recessive in 

 the male hybrids, but is not entirely absent in the females. The 

 high nostril is recessive, yet it shows its influence in the first hy- 

 brids. The comb in thr first hybrids is different from that of 

 either parent, yet in the second generation there is a partial 

 return to the two parent types. 



An interesting cross was made between the Japanese long- 

 tailed fowl or Tosa fowl (Fig. 1252) and the white Cochin Ban- 

 tam (Fig. 12 ; i). In the Tosa fowl the feathers of the tail show 

 continuous growth, reaching in extreme cases 18 feet, and 

 generally 7 to 8 feet. 



There is a marked sexual difference in the Tosa breed, but not 

 in the white Cochin. The male hybrids had the coloration of the 

 Tosa cock except that every feather was barred with white 

 (Fig. 12 ; 3). The female hybrids were like the Tosa hen, excepting 

 that the shafting was much broadened, and the saddle feathers 

 and the secondaries were black and buff barred. In the second 

 generation the two original types reappeared. There were 28.1 

 per cent white (Fig. 12 : 4) and 7 1.9 per cent pigmented individuals. 

 However, of the whites, only five were without reddish pigment, 

 showing that they were contaminated by the cross. " The 41 pig- 

 mented individuals showed a curiously mixed lot of coloration. Of 

 41 mature females 6 are like the female Tosa fowl, without barring, 

 but sometimes with wider shafting than the male Tosa fowl. 

 The remainder have feathers of the back and wing coverts barred 

 with lighter, even with white a condition not found in the female 

 first hybrids. One of these shows a mixture of female Tosa 

 and female Partridge Cochin coloration. As no Partridge Cochin 

 is involved in the immediate ancestry, this looks like a 'rever- 

 sion ' ; the characteristic has probably lain latent in the White 

 Cochin. Of 10 males, 2 showed no trace of white, and may 

 consequently be considered as homozygous. The remainder are 

 more or less barred with white. One bird shows a remarkable 

 mixture of Tosa and male Partridge Cochin coloration. *' The 



