Experiments with Poultry 123 
The Hamburg 
rose comb is domi- 
nant over the single 
comb of the Leg- 
horn and Cochin, 
the dominance be- 
ing complete. 
The Hamburg 
rose comb is domi- 
nant over the Hou- 
dan leaf comb, al- 
though the latter, 
as stated above, is 
itself dominant in 
other combinations. 
In the second gen- 
eration (F,) the 
Mendelian expecta- 
tion is largely rela- 
ized. 
The white plum- 
age of the Leg 
horn dominates 
over the black of 
the Houdan and 
Hamburg, and also 
over the buff of the 
Cochin. In onlya 
few cases, however, 
is this dominance 
of white complete. 
In the majority of 
cases it is incom- 
Psy ams 
a 
"ene ” Fed, 
cormantto av TAL 
FREUnALE Pouttiy Jou, 
Fic. 10, A. Buff Cochins. (Aeliadble Poultry 
Journal.) 
plete, the white feathers being ticked with black, or there are 
patches of buff or brown. A few exceptional cases were noted 
where white did not appear to dominate. 
