134 PHILOSOPHICAL TRANSACTIONS. [ANNO 17Q7. 



the uterus, and all accumulated about the orifice of the tubes; the amnion was 

 likewise closer to the chorion. 



Exper. 20. Opened another at the end of the 3d day, or rather on the beginning 

 of the 4th: the ovaria were dark brown; the fallopian tubes and uterus almost 

 black, from the great quantity of blood derived to them at this time; I opened 

 this uterus on the upper edge and in the body, so that the parts all remained turgid; 

 the spermatics and hypogastrics not cut through ; the corpora lutea were very vas- 

 cular, an artery running across ramified from both sides, but particularly spent 

 itself in the centre; the upper part of the corpus luteum, or centre, was a little 

 concave, like the head of a turned small-pock, but no evident foramen: I believe 

 the ova were gone out, but I could see nothing of them in the tubes nor uterus; 

 the fimbriae were more vascular than I ever saw them, and wholly covered the ovaria; 

 the peristaltic motion of the tubes was very evident, and greater than ever I had 

 seen it; the inner surface of the horns was graniform, with white spots; this I 

 suppose decidua, or perhaps corpus glandulosum Everrahrdi. De Graaf saw the 

 ova in the tubes this day. 



Exper. 21. Opened a rabbit at 6-f days: ova in the horns of the uterus were just 

 begun to fix, but did not adhere by vessels; they were very much enlarged com- 

 pared with the 6th, and the side next the uterus had a round rough spot in it, now 

 very conspicuous; the chorion and amnion were almost in contact with each 

 other; they were easily turned out of the uterus, which embraced them every where 

 loosely, but at the bottom ; the corpora lutea now increased exceedingly in vas- 

 cularity, and nourished by a large vessel running across the tubes ; remarkably pale, 

 as having done their duty; the graniform appearance on the uterus internally not 

 observable as in the last. 



Exper. 22. Opened a doe the 7th day complete after the coitus: turned out, but 

 with difficulty, J of the ova a little larger than in the last; the substance of the 

 uterus over these ova was become thin and transparent, so at first sight we might 

 imagine it was the ovum naked, neither was this part so vascular as might have been 

 expected, considering the principal change was going on here; the ovum burst the 

 moment it was disengaged from the uterus; a gelatinous coagulable fluid issued 

 out, but no appearance of foetus even in the microscope. 



Exper. 23. Opened another rabbit at the end of the 3d day: same appearance 

 as in exp. 20: searched in vain for the ova on the right side; at last, by drawing a 

 probe gently over the fallopian tube on the left side, before it was opened, more 

 than an inch on the side next the uterus, I pressed out several ova, which seemed to 

 come from about its middle, as I began the pressure there, and the ova did not 

 appear till the very last ; the amnion made a centre spot, and appeared small com- 

 pared to the chorion; no ova in the uterus. 



Exper. 24. Opened another at 3-£- days: ovaria had the appearance as if the ova 

 had not yet gone out; however, many of them were found in the uterus, and 



