60 



DR. B. C. A. WINDLE ON THE 



[Feb. 1, 



greater part of the 5th lumbar, the whole of the 1st sacral, and a 

 twig from the 2ncl. The pudic nerve is formed from the remaining 

 portion of the 2nd. 



Fi-. 2. 



£.c 



Lumbar and sacral nerves. (Diagrammatic.) 



I.fii/. nio-bvpogastric ; Ui'ff- Ilio-ingiiinal ; E.C. External cutaneous; jic, 

 Anterior crural ; Ob. Obturator; 6c. Genito-crural ; G.Sc. Great scaitic ; 



P. Pudic 



Thorax, 



The chief points of interest are as follows: — (1) Triangularis 

 sterni is yerj' large and well-marked. It ascends nearly as high 

 as the npper margin of the sternum. (2) The diaphragm is in 

 most respects in no way different from the ordinary condition. Its 

 central tendon is, however, triradiate, consisting of three strips of 

 fibrous tissue arranged somewhat like an arrow-head ; one of these 

 is directed towards the sternum, a second backwards and to the right, 

 a third backwards and to the left, and the interval between these 

 last is muscular. 



(3) Lungs. — The left has three lobes, divided in a way similar to 

 that of the right lung in the human subject. The right has five 



