VOL. V.J PHILOSOPHICAL TRANSACTIONS. 531 



I 



The latter has observed the same in London, September l6, o. s. having 

 the same appearance. 



An Extract out of a lately printed Epistolary Address, made to the 

 Grand Duke of Tuscany , touching some Anatomical Engagements y of 

 Laur. Bellini, Ord. Anat. Prof at Pisa. N" 65, p, 2093. 



The meclianical notions of this Italian anatomist being now for the most 

 part rejected by physiologists, a detail thereof ceases to be interesting. 



A Narrative of a Monstrous Bii^th in Plymouth, Oct. 22, I67O; with 

 the Anatomical Observations, taken by William Durston, M. D. 

 atid communicated to Dr. Tim. Clerk. N°65, p. 2096. 



This birth, (as you see fig. 1, pi. 13.) had two heads, and two necks, as 

 also the eyes, mouths, and ears suitably double. Four arms with hands, and 

 as many legs and feet. There was to both but on^ trunk ; though two back 

 bones, from the clavicles to the hypogastrium, and from the shoulders down 

 to the bottom of the loins they were not distinct, but cemented and concor- 

 porated after this manner : The right clavicle or channel bone of the right 

 hand child (being long) joined with the left clavicle of the left hand child. 

 The ribs on the face side of both of them, by the cartilages or gristles were 

 united without any intervening sternum or breast bone ; and so made a com- 

 mon chest to them both : and the ribs of both on the back part were united by 

 the gristles ; and from the clavicle down to the hypogastrium or bottom of the 

 belly, they were so conjoined, that they made but one common belly, with 

 one navel string to them both ; but from the hypogastrium downwards they 

 were divided, and became two, each having the perfect parts of females. 



Having with some difficulty obtained the father's leave to dissect it, we first 

 weighed this birth ; the weight whereof was eight pounds and a quarter ; the 

 circumference of the left head was about eleven inches, that of the right being 

 half an inch less. The circumference of the trunk was about sixteen inches 

 and a quarter ; and the length of both, from head to foot, was full eighteen 

 inches and a half. 



We found one navel vein, and one liver, but that was very large, with the 

 bladder of gall seated in its usual place : but there were two urinary bladders, 

 two wombs, four kidnies, and one stomach, with the oesophagus or gullet 

 perforate and open from the mouth of the left head ; but the oesophagus from 

 the mouth of the right head descended no lower than a little above half an 

 inch off the midriff, and there it ended. No further could we follow it with 



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