122 ANNALS NEW YORK ACADEMY OF SCIENCES 



smoky. The primaries, indeed, can be called barred only by courtesy, for 

 the light bars are only represented by white splashes along the shaft 

 (Plate XVIII, fig. 14). This region, however, is one in which the fan- 

 ciers have found great difficulty in producing even and regular barring. 



One barred male is particularly interesting in that a few feathers show 

 distinctly the Jungle coloration (Plate XVIII, fig. 12) which probably 

 exists as a cryptomere in the Langshans. 



All the males have numerous feathers wholly or partly black (Plate 

 XIX, figs, p-u) and this is true also for the barred females. The last, 

 except for the black feathers, are well barred (Plate XVII, fig. 6) and 

 can scarcely be distinguished from the parental stock. Even the indi- 

 vidual feathers, except the remiges and retrices in which the bars run 

 together, conform closely to the pattern shown by many thoroughbred 

 Barred Rocks. 



The color of the F x black females (Plate XVII, fig. 8) is indistin- 

 guishable from the parental Langshans. 



Comparatively few members of the F 2 generation reached maturity. 

 The only points of particular interest are the appearance of very light 

 as well as dark males, of both black and barred males having a few 

 feathers showing the Jungle fowl coloration and of dark-colored females 

 with the barring somewhat blurred. 



The non-apjjearance of game (Jungle) colored birds in P 2 is due pre- 

 sumably to the fact that black is duplex in both Rocks and Langshans, 

 and thus the Jungle fowl color is concealed. There are, however, indi- 

 cations that black may sometimes exist in a simplex condition among 

 Rocks; so that, if suitable matings were made, the Jungle fowl color 

 might appear. Unless the occasional feather showing Jungle fowl color 

 is due to a simplex condition of black, its appearance may mean that 

 hybridization in some way has upset the usual complete dominance of 

 duplex black over the Jungle fowl coloration. 3 



As already stated, Pearl and Surface have published their results in 

 crossing Plymouth Rocks and Cornish Indian Game. Our results en- 

 tirely accord with theirs, as far as inheritance of barring is involved. 

 They classify their birds as barred and non-barred, ignoring intentionally 

 the differences among the non-barred birds. Our results are simpler, in 

 so far as all our non-barred birds are black, but the principle involved is 

 the same in both cases. Pearl and Surface have also made all possible 

 back crosses between the parents and the P x generation. Our results are 

 in entire harmony with theirs, but they have the advantage of a larger 

 number of offspring in their matings. 



3 Davenport, 1909, p. 72. 



