Aug. 15, 1924 
Shape and Weight of Eggs in Relation to Sex of Chicles 199 
Table V .—Frequency distribution and mean weights of eggs producing male and 
female chicks, respectively, that hatched 
BARRED PLYMOUTH ROCK FEMALES MATED TO RHODE ISLAND RED MALES 
Egg weight 
Eggs producing- 
Males 
Females 
Total 
Grams 
47.00 to 47.99_____ 
2 
2 
48.00 to 48.99_____ 
1 
1 
2 
49.00 to 49.99___ 
3 
0 
3 
50.00 to 50.99.__ 
1 
0 
1 
51.00 to 51.99__ 
2 
2 
4 
52.00 to 52.99_ 
2 
4 
6 
53.00 to 53.99_ 
4 
5 
9 
54.00 to 54.99___ 
19 
14 
33 
55.00 to 55.99_ 
16 
16 
32 
56.00 to 56.99___ 
14 
13 
27 
57.00 to 57.99_ 
26 
17 
43 
58.00 to 58.99_ 
22 
15 
37 
59.00 to 59.99_ 
20 
16 
36 
60.00 to 60.99_ 
13 
15 
28 
61.00 to 61.99_ 
10 
8 
18 
62.00 to 62.00___ 
6 
7 
13 
63.00 to 63.99__ 
10 
8 
18 
64.00 to 64.99_.___ 
6 
2 
8 
65.00 to 65.99__ 
9 
3 
12 
66.00 to 66.99_ 
3 
3 
6 
67.00 to 67.99_ 
2 
2 
4 
68.00 to 68.99___ 
1 
4 
5 
Total___ 
190 
157 
347 
Mean weight__ 
58. 64±0. 19 
58. 53±0. 21 
58. 58±0.14 
Standard deviation..___ 
3. 83±0. 13 
3. 92±0.15 
3. 95±0.10 
Coefficient of variability_ 
6. 53±0. 22 
6. 70±0. 25 
6. 74±0.17 
Table VI .—Frequency distribution and mean weights of eggs producing male and 
female chicks, respectively, that died in shell at hatching time 
BARRED PLYMOUTH ROCK FEMALES MATED TO RHODE ISLAND RED MALES 
49.00 
to 
49.99. 
50.00 
to 
50.99. 
51.00 
to 
51.99. 
52.00 
to 
52.99. 
53.00 
to 
53.99. 
54.00 
to 
54.99. 
55.00 
to 
55.99. 
56.00 
to 
56.99. 
57.00 
to 
57.99. 
58.00 
to 
58.99. 
59.00 
to 
59.99. 
60.00 
to 
60 99. 
61.00 
to 
61.99. 
62.00 
to 
62.99 
63.00 
to 
63.99. 
64.00 
to 
64.99. 
65.00 
to 
65.99. 
66.00 
to 
66.99. 
67.00 
to 
67.99. 
68.00 
to 
68.99. 
Total.. 
Egg weight 
Eggs producing— 
Males 
Grams 
30 
57. 56±0. 44 
3. 56±0. 31 
6.18±0. 54 
Females 
41 
57. 82±0. 43 
4. 09±0. 30 
7. 07±0. 53 
Total 
1 
4 
1 
1 
4 
3 
10 
7 
8 
4 
14 
2 
2 
1 
4 
3 
1 
0 
0 
1 
71 
57. 71±0. 31 
3. 92±0. 22 
6. 77±0. 38 
Mean weight_ 
Standard deviation_ 
Coefficient of variability. 
