224 LOTSY AND KUIPER, A PRELIM. STATEMENT OF THE RESULTS OF MR. 
fowl, others willow-or dark grey. In general therefore Gallus lafayetti 
dominates in the hybrids with Mr. Johnson’s domestic hen, the breed of 
which is unfortunately not stated ?). 
AS TO THE PERTILITY OF THE HYBRIDS: 
All the hybrid cocks have been mated up, at one time or another, 
after the departure of MR. JOHNSON, either by MR. G. C. BLiss or by DR. 
J. L. THomas, in different runs with domestic hens, and in every single 
case fertile eggs have been produced and strong healthy chicks hatched out. 
The hybrid cocks are therefore quite fertile with the domestic parent. 
THESE BACK-CROSSES with the domestic parent, were fertile again: 
a) with a domestic hen. 
oF Ss 
) 
) interse. 
) with a F, cock. 
) with a domestic cock (a bantam) no result was obtained 
e) with a jungle cock (lafayetti) only two addled eggs were obtained. 
The F, hybrids were paired inter se in the hope of obtaining an F3. 
They proved to be fertile, although the actual returns were small, as 
the following table on p 5 shows: 
A 


Settings Results 
Num-IInfer. 
How set Date ber off tile |Addled | Dead in Hatched out 
eggs 





Incubator June” 77199678 6 
Hybrid hen |June 7 1906| 6 6 
re 2e Aug. #147 5 7 6 1 chick, ived=18 
Incubator OCR ZENE 9 8 1 days. 
Domestic hen|Nov. 3 ,, 6 5 1 chick, lived 12 
5 ll Declan 8 if il days. 
x Ten: De 9 9 term. 
Incubator Jana Zonen 10 10 
Domestic hen Febr. 9 „ 13 9 12 and Mi full 
embryo| term. 
Incubator leon UD 7 5 2, nearly 
ie March 5 5 5 full term 


1) Later on in the article this hen is referred to as „common mongrel domestic”. 

