THE OVARY OF THE SPERMOPHILE Lt 
Experiment 302-16 (spermophile 337). Captured in the spring of 
1916. Weight, 120 grams. Operated on May 8, 1916. Both ovaries 
were removed. ; 
Gross observations. The animal is pregnant, the placental swellings 
being 6 mm. in diameter. 
Sacrificed May 18, 1916. Weight, 142 grams. 
Gross observations. The uterus is in a very unnatural condition. 
It appears dark red in color all over. (The color is not due to conges- 
tion as can be seen on microscopic section. Instead, it must be due to 
the presence of old clotted blood in the lumen.) There is one hard 
swelling still palpable. The pregnancy was interrupted and the 
placentas with the fetuses have been undergoing degenerative changes. 
Experiment 303-16 (spermophile 338). Captured April 23, 1916. 
Weight, 221.5 grams. Operated on May 8, 1916. Both ovaries were 
removed. 
Gross observations. The animal is pregnant, the placental swellings 
being of good size. 
Sacrificed May 19, 1916. Weight, 140 grams. 
Gross observations. The uterus is very dark-red colored, dead- 
looking and contains several dark-colored swellings. The blood supply 
to the uterus is intact as tested by Dr. Mann. It appears as though 
degeneration of the placentas with the fetuses has been going on. 
Experiments 305-16 (spermophile 340). Captured May 6, 1916. 
Weight, 124 grams. Operated on May 8, 1916. Both ovaries were 
removed. 
Gross observations. The animal is in an advanced condition of 
pregnancy, the placental swellings measuring 2.2 cm. in length and 
1.3 em. in breadth. 
Died May 11, 1916. 
Gross observations. The cause of death could not be determined. 
The uterus is very unhealthy appearing, dark red in color. The 
remaining placental swellings are of various sizes. They are very dark 
red and are hard. Apparently degeneration changes have been going 
on. 
Experiment 307-16 (spermophile 342). Captured May 6, 1916. 
Weight, 142 grams. Operated on May 8, 1916. Both ovaries were 
removed. 
Gross observations. The animal.is pregnant, the placental swell- 
ings being 6.5 mm. in length. There are nine swellings in the left horn 
and three in the right. 
Sacrificed May 20,1916. Weight, 152 grams. 
Gross observations. The uterus is very dark in color. There are 
some adhesions on the left end. In the left horn are four swellings, 
the first and fourth measuring 4 mm. in length and breadth, the second 
4mm. by 5 mm., and the third, 2 mm. x 2 mm. In the right horn 
are three swellings—the first measuring 4 mm. x 4 mm., the second 
