VOL. LXV.} PHILOSOPHICAL TRANSACTIONS. 575 



Haller, in his Opuscula Pathologica, gives the history of a young lady of quality 

 who had 2 wombs, each of an oval shape, and furnished with its own peculiar 

 vagina. One of these vagina was anterior, and communicated with the right 

 womb ; the other was posterior, and led to the left. And it is worth observing, 

 that in these two cases, and in most others of the same kind, which have been 

 hitherto observed, each uterus had only 1 ovarium, and 1 tube. 



A double uterus is described by O. Acrel, in a treatise printed at vStockholm, 

 in 1762 ; and in the 7th vol. of Haller's Elementa Physiologiae, various authors 

 are referred to, who deserve to be consulted on this subject. In some of these 

 we find examples of 2 wombs, or 1 uterus divided into two cornua. In other 

 instances the uterus retained its proper external appearance, though it was really 

 double, its cavity being divided by a septum. 



Since therefore it is certain that, in the structure of the parts of generation. 

 Nature frequently deviates from her ordinary course, practitioners in midwifery 

 ought to consider how many difficulties they may perhaps be exposed to, by not 

 attending to the possibility of sometimes meeting with those organs formed in 

 the same manner as in the subject of this essay. An attention of this kind 

 would probably have been of the utmost consequence in the present case ; for 

 the orifice of the unimpregnated uterus was so far dilated, as easily to admit 2 

 fingers, which might have arisen from the attempts of the midwife to bring on 

 (delivery : nor can we conceive any thing more vexatious than such a case would 

 prove, were it to fall into the hands of an inexperienced person ; as the orifices 

 of thedifterent wombs presenting themselves alternately to his touch, he might 

 entertain doubts of the pregnancy of his patient, even when her labour was ap- 

 proaching ; and, by endeavouring to dilate the left vagina, all his efforts to pro- 

 mole delivery, would only serve to render it more difficult, or perhaps 

 impracticable. 



JLLVIII. On some Specimejis of Native Salts, collected hy Dr. Brownrigg, 

 and shewn at a Meeting of the R. S., June 23, 177'^- P- 481. 

 This paper contains a description of some specimens of native salts, mention- 

 ing at the same time the places where they were found. 



END OP THE SIXTY-FOURTH VOLUME OF THE ORIGINAL. 



7. Experiments on the Torpedo, made at Leghorn, January \, 1773. By Dr. 

 John Ingenhousz,* F.R.S. Anno 1175. Vol. LXF. p. 1. 

 As I could get no torpedos alive to my lodgings at Leghorn, I hired a fishing 



* Dr. Ingenhousz, was a native of Breda, and for some time practised physic in his native coun> 

 try. About the year 1767 he came to England, to learn the Suttonian method of inoculating the 



