HOUWINK’S EXPER. CONC. THE ORIGIN OF SOME DOMESTIC ANIMALS 229 
Back-crosses 
BEND 2 ex P 201.3 9 x F, 198.14 .... 2 animals 
F,F, 632.1—4 OENE 39165, ONE ene ee A 
F,F, 633.1—6 391.7. 0. SW 00 I er CINE 
Descendants of Sonnerat 269.1 & BLAAUW: 
P. bankantam 201.2 2 x Sonnerati 269.1 & 
F, 270.1—6 ex. PA 2012” Ozon, ee, 
F, 276.1— 28 ex F, 270.4 9 x 270.2 31 i 
e278) 1-42 M 2705 OON “4 
F, 573.1 ex F, 276.12 © x 276.11 & 
F, 574.1—4 le N a DO, 
F, 607.1—4 Wars 2769 Opec cet 
Descendants in which two bankantam-hens: 201.2 and 201.3 and two Sonnerati 
cock’s: 195.1 and 196.1 are concerned: 
WEE 2609. 2—4 ex F, 198.8 9 x Sonne 269.18 2.2 3 animals 
F, P F, P 280.1—8 | ex FL P 269.39 x eel an 
F, P F, P 281.1—13 RL P 269.2 SoC RAP 27e en 5 
Total 147 cross-breds. 
If we count the regular crosses F,, F, etc. only, the number of indivi- 
duals born, is reduced to 111. The Sonnerat cock of MR. BLAAUW was 
originally in the possession of MR. DE Bas, both therefore probably be- 
longed to the same imported lot, as there is no record of MR. DE BAs 
having bred Sonnerat’s, so that the two Sonnerat cocks were probably 
not related. The cock, received from MR. DE Bas directly, 191.1 3, was 
crossed with a daughter of the original pair of , Bankantam”’ bought by 
Mr. HOUWINK; the cock of Mr. BLAAUW 269.1 & was crossed with the 
mother of that bankantam e. g. with the hen of the original pair. Coun- 
ting together the regular crosses F,, F, etc. obtained from these birds 
we get: 
