HOUWINK’S EXPER. CONC. THE ORIGIN OF SOME DOMESTIC ANIMALS 151 
CHAPTER: I 
THE ORIGIN OF Mr. HoUWINK’S BIRDS 
1. Gallus bankiva. (Plates in the next number) 
On the 15th of July 1912 Mr. HouwiNk bought of the animal dealer 
Mr. P. van CALCAR VEENSTRA in Rotterdam, a pair of birds, said to be 
bankiva’s 201.1 Sand 201.2 2, which according to Mr. VEENSTRA had 
been purchased, from the animal dealer Mr. J. D. HAMLYN in London; 
an other pair, probably from the same importation, was sold by the 
latter, in the same year to the Zoological Gardens in London. 
During the summer of 1914 Mr. VAN CALCAR VEENSTRA again sold a 
hen and a cock, said to be bankiva’s, to Mr. HOUWINK, but added that 
be was unable to guarantee their purity; they were therefore not used 
in the experiments. 
2. Gallus lafayetti. Pl. IV. 
Gallus lafayetti is the Ceylon junglefowl, the female of which has 
been described as a separate species under the name of Gallus stanleyi. 
In 1915 a Chinaman, who — he said — had come by board of a British 
vessel directly from Ceylon, sold to Mr. VAN CALCAR VEENSTRA 4 cocks 
. and 4 hens which he called Ceylon Junglefowl’’. These birds were sent 
to Mr. HOUWINK, who, after comparison with skins of Gallus lafayetti, 
sent to him by Dr. J. LLEwELLYN THOMAS, saw at once that they were 
no Ceylon Junglefowl. Cocks, as well as hens, looked much like Gallus 
bankiva, except that they had yellow legs, while the cock now stuffed 
as 217.1 has very pale hackles and saddle for a bankiva. Possibly these 
birds may have had a slight strain of lafayetti blood: the breasts of the 
stuffed cocks show black and brown mottled, sometimes even span- 
gled, feathers ; bankiva is said to be always black-breasted, lafayetti is 
brownbreasted, and lafayetti has yellow legs. Moreover the cock 218.1, 
born from these Chinaman’s birds, although quite bankiva-like in the 
brown margins of hackles and saddlefeathers, has an upper saddle the 
feathers of which may be called intermediate between those of lafayetti 
and those of bankiva at the corresponding place. 
This cock has the lower part of the two central tailfeathers white and 
also some white on the wingfeathers, much on the secondaries, and 
