260 LOTSY AND KUIPER, A PRELIM. STATEMENT OF THE RESULTS OF MR. 
The F, hen 198.3 9, which had the Sonnerat cock 195.1 & as its fa- 
ther, was crossed back with the Sonnerat cock 269.1 3, this being the only 
time that crossing back with Sonnerat has been and could be done, on 
account of the early death of both Sonnerat-cocks. The resulting chicks 
are here enumerated 
269.2 2 born 1916 later used in expt. 281 
26953 C0 16 ea 260 
ZONA | 7 died or disappeared. 
Neither of these hens (of which we have but incomplete feather- 
charts) is particularly sonneratian, all resemble their own mother. 
Evidently therefore the hen 198.3 has split off gametes close to ordi- 
nary bankantam gametes, which have united with the sperm of the 
Sonnerat-cock: practically therefore the hens 269.2 9, 3 © and 4 2 were 
F, bankantam. X sonnerati hens. 
The hen 269.2 2 was subsequently crossed with the cock 271.1 3, 
itself arisen from crossing back the bankantam 201.3 © with the F, 
bankantam-sonnerati hybrid 198.1 3, which, as we saw, was almost en- 
tirely bankivian. 
This cross consequently comes very near to backcrossing an F, ban- 
kantam X sonnerati hen, with a bankantam. 
The result was: 
1917 
281.1 4 born May 1917 
NC | ge DSA 
mo) periph ee CAN 
As ee tk, 
a > 3 : : he all killed purposely, to make room for more 
— 7 ê 4 promising experiments as all looked practi- 
Gea 1917 
ee Coot 1917 cally like the bankantams with which the 
Bu 1917 experiment began. 
eg 
ee u su hoy, 
Zu 1917 
= hed hes 1917 
