VOL. LXXXVII.] PHILOSOPHICAL TRANSACTIONS. 133 



for 2 or 3 minutes, and afterwards immersed in proof spirit; in some I found the 

 brain, spinal marrow, and vertebrae, forming 2 columns at some distance; they af- 

 terwards gradually approached; for it was in one of the least forward that this was 

 most evident. 



Exper. 14. Opened a doe 21st day after the coitus: 5 vessels were seen going 

 out of the navel in 1 of the foetuses, besides the urachus; the omphalo-mesenteric 

 artery was very distinct, and divided into 2 as it came to the mesentery; could not 

 see the arachus or allantois well, nor the membrane to which the omphalo-mesen- 

 teric artery goes. 



Exper. 15. Opened a doe the 5th day after coitus: found the ova loose in the 

 uterus, to the number of 6; even these had a lesser coat in the inside, corres- 

 ponding to amnion. None in the tubes. 



Exper. \Q. Opened, 14 days after the operation, the doe whose fallopian tube I 

 tied. The uterus of the right side was the size of the 6th day; the ovarium and 

 uterus had gone backward as to the process, and there was no appearance of foetus ; 

 though placenta was very evident on the left side, there was no other appearance 

 of conception in the uterus; no other placenta; the fallopian tube was very large, 

 soft, and tender; the ovarium twice the size of that on the other side, red, and 

 covered with extravasated coagulable lymph; there was an hydatid in the course of 

 the tube, containing a clear fluid, but nothing like foetus. I suspect that tying the 

 tube prevented the ova on this side from coming out of the ovarium, and that 

 though they rather increased in the ovarium, the process soon stopped; that the 

 process went on however, in the other side for a few days, and then stopped like- 

 wise: there was universal inflammation about the uterus and colon of the left side, 

 with great quantities of white extravasated coagulable lymph ; there was water in 

 the abdomen, and all the appearance of peritoneal inflammation. This process 

 seems to give but little pain, for the animal at the time she was killed was eating 

 and looking as usual. 



Exper. 17. Opened a doe the 3d day after the coitus: the pouting parts of the 

 corpora lutea very transparent before the uterus was touched ; but as soon as the 

 spermatic and hypogastric arteries were divided, in order to cut out the uterus, they 

 all, as if struck with some shock like electricity, became opaque. The pouting 

 part I believe is the ovum, and stands on the top of corpus luteum; it is very vas- 

 cular, particularly at its basis, but as soon as perfect, or ready for expulsion, carries 

 no red blood; it continues to grow of itself in utero, without adhering to the 

 uterus for 2 or 3 days, then takes root, and becomes very vascular: nothing in the 

 tubes or uterus. 



Exper. 18. Opened another the 4th day in the morning; but it had not con- 

 ceived, and was in the state of one hot. 



Exper. 19. Opened 1 in the evening of the 4th day: the appearances were little 

 different from those of the 5th morning; the ova were only less dispersed through 



