582 PHILOSOPHICAL TRANSACTIONS- [aNNO 17 10. 



a rugosity for the insertion of the flexores cubiti, 6^ inches long, and 34- inches 

 broad at the upper part, and thence descending gradually, it terminates in a 

 point. At the lower part of this rugosity, the bone is 1 34- inches in circum- 

 ference, having 3 faces ; one at its back part 5 inches broad, somewhat de- 

 pressed from the inside, then a little protuberant, as it tends outward ; a second 

 on the outside, and 4 inches broad ; and the third on the inside, 4-l inches 

 broad, flat also. Here begins another considerable rugosity, small and oblique 

 from the back part of the utmost protuberance of the humerus, and becoming 

 very rugous at this place, continuing 6 inches obliquely downward, and 1 inches 

 broad about the middle. At the lower part of this rugosity the bone is 18 

 inches in circumference, with its three faces otherwise disposed ; that which was 

 before terminated in an obtuse spina, and where it was an obtuse spina behind, 

 now becoming flat. On the outside begins a considerable sinus, being the con- 

 tinuation of the sinus formerly mentioned, between the epiphysis humeri and 

 the outer protuberance, whence in its descent the bone became depressed ; and 

 now the sinus is conspicuous, being framed by an obtuse spina, descending 

 obliquely forward from the foresaid rugosity on the one side, and another obtuse 

 spina desc^ending obliquely outward on the other. This sinus is 4 inches broad 

 from before to behind; thence measuring backward, the bone is flat 3^^ inches; 

 measuring from thence on the inside, the bone having formed an obtuse angle, 

 is 54 inches flat also. The spina on the fore side, after it has descended 54^ 

 inches, the bone becomes flat ; that on the outside terminating in a consider- 

 able protuberance, 4-^ inches long, where the bone has only two faces, convex 

 before and concave behind, and 1 7 inches round. Behind its foresaid outward 

 protuberance is 7 inches ; it becomes 14- inches depressed in the middle, where 

 the sinus for receiving the cubitus begins. From the foresaid external protu- 

 berance it descends in a straight line 8 inches, and from its opposite part at the 

 inside it descends obliquely backwards 5 inches ; and here the lower epiphysis 

 begins, where it is received by the cubitus and radius. This epiphysis is 1 foot 

 104- inches round, being 3 inches thick at the outside and flat, and 7 inches at 

 the inside and protuberant ; between which behind is a considerable sinus 54- 

 inches broad, and 24^ inches deep, and before, another sinus 7 inches broad, of 

 the same deepness. This epiphysis is at its lower extremity and inside, where 

 it receives the cubitus, 54 inches from before to behind ; of a convex surface, 

 and 6 inches at its outside, where it is received by the radius. At the extremity 

 of the epiphysis, it is narrower, being only 6 inches from the right to the left 

 before, and 74- inches behind. And thus you have an account of the most 

 irregular bone of the body, being at its external part 30 inches in length, and 

 26 at its internal ; having a large head consisting of an epiphysis received by the 



