HOUWINK’S EXPER. CONC. THE ORIGIN OF SOME DOMESTIC ANIMALS 373 
c. rudimentary comb no wattles (e. g. 208.2 9). 
And even then the number of factors is by no means exhausted as 
some birds show: a white shaftstripe of the feathers of the back, of the 
breast or of both, while in others this white shaftstripe is absent; as 
some have red and other more or less white in the earlappets, as some 
have crossbars on the secondaries and others have not. 
Moreover, while most of the chicks were of the ordinary bankiva- 
pattern, as described by BEEBE, very much like the one pictured in 
fig. 4, Pl. XI of PUNNETT's Heredity in Poultry 1923, others were pale _ 
brown, yellow, whitish yellow or even white. 
The records are insufficient to say definitely what effect this diffe- 
rent down color had on the adult birds; the brown and pale brown 
chicks probably had very much the same plumage when adult, and 
even the yellow ones may not have had a very different color when 
adult, but this cannot be stated with any degree of certainty. We know 
that the white chick born in the experment 208 developed to the 
wheaten-colored bird with the black limited to the neck, wings, and 
tail, n°. 208.3 described above, and that the 2 whitish yellow chicks of the 
experiment 209 developed to the washed-out hens 209.3 and 209.4 
also described above. The first plumage of the chicks is very generally, 
but not always cross-barred, frequently in a very regular way (Pl. 
VIII fig. 1) suggesting the crossbarring of such breeds as , pencilled’”’ 
Hamburghs. I have been unable to get definite information as to of 
the appearance of the first plumage of our domestic poultry, but 
myself have seen crossbars on some juvenile feathers of partridge ban- 
tams and on those of young cocks of Gallus lafayetti; while Mr. Lowe, 
as has been said, found crossbars on the wingfeathers of some bankiva- 
chicks in South-Kesington. I have no information as to the first 
plumage of Sonnerati, while BEEBE mentions crossbars in the case of 
juvenile plumage of varius. Very likely crossbarring of first plumage is 
very general, not only among Gallus but also among other Phasianidae, 
as it is present f. 1. in the case of Phasianus colchicus. 
(To be continued). 
