390 ' 
Journal o f Agricultural Research 
Vol. XXIX, No. S 
from 0.69 per cent to 5.62 per cent, 
or 7.1 times; and the ovary increases 
from 0.17 per cent to 2.65 per cent, 
or 14.5 times. No eggs were found in 
usually is, but flabby. A similar con¬ 
dition was seen in two of the hens. 
It is interesting to note that the 
ovary and oviduct are closely corre- 
the oviducts of the pullets at 230 and 
243 days. The pullet at 243 days is 
from Group 3, the other pullets above 
188 days are all from Group 1. 
lated in weight, both increasing or 
decreasing proportionally. 
The greater weight of the ovary in 
the pullet at 286 days and in one of 
Fig. 27.-—Weights of the ovaries and oviducts, plotted on age in days. The solid dots here represent 
weights of the ovaries. The circles represent oviducts. Both the ovary and the oviduct of one of 
the hens were too heavy to represent on the chart. The weights were; 08.5 p:m. for the ovary and 
50.7 gm. for the oviduct. No curves were made, since the cases are too irregularly arranged 
In the pullet at 230 days there was 
an interesting example of what ap¬ 
peared to be an ovum which was 
being resorbed. The yolk mass had 
apparently been partly resorbed until 
the membrane was not tense, as it 
the hens may be due to the presence of 
a fully mature ovum, just ready to 
emerge from the ovary. 
The increase in the diameters of the 
ovarian ova was also recorded, and it 
apparently is a more gradual change 
