ore JOHN C. PHILLIPS 
The original Rouen stock consisted of two males and four fe- 
males. They were obtained from a dealer in April, 1910, but were 
not weighed until the following fall. During the summer of 
1910 two males and five females were raised from the original 
stock, while in 1911 six males and nine females were brought to 
maturity from the same source. These twenty-two birds (sec- 
ond and third generation, Rouen stock, table 1) were killed and 
weighed at the same time as the F,’s and F,’s, so that a definite 
control might be obtained. The mean weight of the Rouen 
race was calculated from these twenty-two individuals. For 
the males, it was found to be 2321 grams; for the females, 2237 
grams. The original Rouens were not included in this calculation, 
because when weighed for the first time, at one and one-half 
years of age, they were very fat and not directly comparable with 
their offspring. Their weight was 16 per cent greater than the 
TABLE 2 
Weights of pure large race, Rouen 
MALES . FEMALES 
Age Grams Grams 
( 2600 2220 
Origimal’stock.*..... 2 $io.0 aa. eee 14 years ee pe 
| a 
2470 2220 
2600 | 2300 
Second generation (1910)............... 5 months | 2370 
2420 
2670 
1980 1885 
2162 1990 
2252 2095 
2260 2105 
Thirdigeneration((1911). -2:........ seen Ont nS 2339 2175 
| 2512 2200 
2202 
2230 
2460 
