46 BULLETIN 106, U. S. DEPARTMENT OF AGRICULTURE. 
Case 13. — Aged. Length of fetus, 20 inches. Uterine seal at internal os lemon- 
colored, elongated, ragged, and apparently mixed with muco-pns. Pressure on cervix 
caused oozing of yellowish exudate into uterine cavity. Uterine seal at os externum 
apparently somewhat softened, but otherwise normal. 
Utero-chorionic space radiating from internal os contains a considerable amount of a 
thin, yellowish, puriform exudate. 
Case 14. — Aged. Fetus full term. The uterine seal was normal, or slightly softened. 
Externally the uterus appeared normal. The entire utero-chorionic cavity of the 
gravid horn was covered with a layer of chocolate-colored, gluey exudate, so abundant 
and firm that the uterine mucosa and exterior of the chorion seemed firmly glued 
together between the cotyledons. 
For a few square inches at the internal os the exudate is mixed with tenacious 
masses resembling thick, viscid pus. Similar masses to the extent of 2 to 3 ounces 
were in the nongravid horn, and it is quite possible that the puslike masses about the 
internal os emanated from the nongravid horn. 
As usual, the exudate appeared largely clustered about the cotyledonal stalks, not 
because formed there, perhaps, but rather owing to the tendency of the cotyledons to 
push the uterus and chorion apart at these points and thus form room in which the 
exudate would tend to accumulate. 
The chorion was edematous, 1 inch thick, especially in the nongravid horn. 
The placentae were readily detachable. The peripheral chorionic tufts were pale, 
anemic, apparently necrotic, while the deeper tufts were vascular and normal. This 
variation in color of chorionic tufts is essentially universal, if not normal. 
Case 15. — Aged. Fetus full term. Uterine seal normal. The utero-chorionic space 
was filled throughout its entire area with a dark chocolate-colored gluey exudate, 
which was so adhesive that the separation of the chorion from the uterine mucosa 
required some force. Detaching the chorion from the uterus, the opposing surfaces, 
when macroscopically cleared of the exudate, remained sticky to the touch. The 
exudate was more uniformly distributed than observed in most cases, and disposed 
in a practically continuous sheet throughout the utero-chorionic cavity, thicker, as 
usual, about the cotyledonal stalks. 
The uterine mucosa and uterine surface of the chorion were pinkish in color, and 
showed no marked discoloration, thickening, or other pathological changes. 
The fetus, fetal fluids, amnion, and allantois appeared wholly normal. 
The placental attachments were as usual, the placentae readily detachable. At the 
periphery, as is usual, some of the chorionic tufts were withdrawn from the uterine 
crypts and were consequently blanched, dirty-gray in color, and soft. 
Case 16. — Two-year-old. Length of fetus, 9£ inches. Uterine seal normal. 
The fetal sac of the nongravid horn and of the uterine body about the internal os 
was necrotic. 
The sac of the nongravid horn was 13 inches long, devoid of cotyledpns, desiccated, 
yellow, flattened to one-eighth of an inch thick, twisted spirally. It lay wholly free 
in the horn cavity, surrounded by a dirty, viscid, yellowish-brown tough exudate, 
estimated at 1 ounce. 
The utero-chorionic space of the gravid horn contained exudate for a distance of 
6 inches from the internal os. The uterine mucosa over the involved area was pale 
yellowish, thickened, and roughened. 
Case 17. — Aged. Fetus 38 inches long. Uterine seal intact. 
Radiating front the internal os for a distance of 12 inches, the utero-chorionic cavity 
was filled with a brownish-yellow, very viscid pus-like exudate one-eighth to one- 
fourth of an inch in diameter. The fetus, amnion, and allantois were normal. 
Case IS. — Aged. Length of fetus, 28 inches. Uterine seal intact. 
Typical abortion exudate over entire utero-chorionic cavity. Exudate reddish- 
brown or light chocolate in color, in masses 1 by one-sixteenth inch, tough, sticky. 
