HOUWINK'S EXPER. CONC. THE ORIGIN OF SOME DOMESTIC ANIMALS 235 
Fortunately we have of 198.2 the following description: 
„Comb and wattles well developed 1), considerably more developed 
even than those of the mother e. g. of the bankantam-hen. The colour of 
the eye-lids and of the iris is very similar to that of the mother, the bill 
however is distinctly more yellow. On the ventral-side nothing is visible 
of the Sonnerat-pattern, even the sub-marginal black stripes, which are 
present on the breast feathers of both Sonnerat and Bankiva are ab- 
sent, except on the sides of the bird. The reddish brown colour is present 
all over the ventral side, so that Bankiva decidedly dominates as far as 
the ventral side is concerned. 
As to the dorsal side: the best description which can be given is to 
refer to it as a light-coloured bankiva. If one designates the bankiva- 
hen as golden partridge in colour, one SHOULD CALL THE HYBRID HEN A 
SILVER PARTRIDGE” 2), 
As far as the feather-charts allow the pronouncing of a judgement, 
the two birds 198.2 © and 198.3 © have been very much alike, 198.3 
had evidently a little more red in its pigment than 198.2. Both birds 
show a median, white, Sonnerat-stripe on the feathers of the back. 
If we take this F, generation as a whole, it must be called intermediate 
with a distinct leaning towards bankiva, but with a silver color in the case 
of the hens. 
The only other F, generation obtained was from the cross bankan- 
tam 201.2 9, the mother of the bankantam used in the former cross, 
with the Sonnerat-cock 269.1 & of Mr. BLAAUW; unfortunately this 
cock also died at the end of its first breeding season, in 1916. These 
early deaths must be considered as accidental, as Mr. BLAAUW in 
’s Graveland keeps his Sonnerat’s alive for a much longer time. The 
reason probably lies in the difference between the small runs in which 
Mr. HouwiNk had to keep his animals, and the beautiful, large, aviaries 
of Mr. BLAAuw. 
The F, of the cross with Mr. BLAAuw’s cock consisted of 6 chickens, 
4 of which, two cocks 270.1 & and 270.2 & and two hens 270.7 © and 
270.5 © reached adult age, while 270.3 and 270.6 died young. 
Of these 270:4 © and 270.2 & are, at the present moment, still alive, 
all vicissitudes caused by the war, notwithstanding. 
1) The stuffed Sonnerat-hen has a rudimentary, single, serrated, comb and no 
wattles. 
2) This, as we shall see later on, is an important point. 
