HOUWINK’S EXPER. CONG. THE ORIGIN OF SOME DOMESTIC ANIMALS. 149 
The uniformity of this pen was striking. All birds had a single 
comb with an fold just behind the culmen, lead-blue legs, more or less - 
feathered, 4 toes and more or less pigmentation of the skin. 
- The cocks possessed a chestnut crest, rather the same plumage as 
the Bankiva but with lighter feathers in the hindneck than these have. 
They were much larger than the Bankiva’s are and had the comb 
and gills more or less blue-red. 
The hens had a slate brown crest, but for the rest the plumage 
of the Bankiva, excepted the lighter neckfeathers. They were also 
larger than the Bankiva hens and their combs and gills had the 
same colour as those of the Fy cock. 
The first cross Silky 9 X Bankiva 4. 
In 1918 this cross gave no results. Only in the following year 
7 chickens were born viz 4 cocks and 3 hens. 

je Silky | 413.1 | 9 x Bankiva 201.7 4. 
F, 413.4: 413.5; 413.6; 414.7; 22 
| 413.8; 413.9; 413.10; 2 2.1) 
Here too, the pen was quite uniform, apart of the fact that one 
cock and one hen had 5 toes. More striking differences than those 
existing between the reciprocal F,’s were hardly imaginable. 
All birds had a kind of rose comb broad and rather high. 
Mr. Houwink called it red-cap comb, but it did not agree quite 
with shat of the Redcap-fowl. The skin was pigmented, but not 
very strong. Legs and feet were lead blue and feathered. The cocks 
had bankiva-colour and were much heavier than the Bankiva cocks 
are. The feathers of hind neck and saddle were remarkably darker 
than those of the reciprocal cross. The colour of comb and gills 
was more blue and the brown-red crest was black close behind 
the comb. 
The hens were darker than bankiva hens, and therefore much 
darker than the hens of the reciprocal cross. They had, just as the 
Bankiva, but in a much higher degree, much black in the neck- 
feathers and an large black crest. 
The homogenity within the two F; generations was striking. The 

1) These numbers begin with 413.4, the original Silkies having been 
numbered by mistake 413.1—3. 
