A.CiiL ivftmr 



347 



Pis. 102. — The Aobta, -with its Main 

 Branches in the Thobax and Eight 

 Akm ; Venteai, View; xl. A. Origin 

 OF THE Carotid Arteries; x 1. B, C. 

 Veins with Valves ; Quain, A, II, 174. 



The Wickersheimer's fluid prevents the brittleness that is so objec- 

 tionable in plaster injected vessels that are dried. 



B and O — Freparation. — B. A segment of the V. jugularis 

 externa about 5 cm. long was slit lengthwise and placed in water, 

 and the valves floated up by blowing into the little pockets with a 

 blow-pipe. 



0. The external jugular or femoral vein was injected peripherad 



