

/ /.'. Sabin. 



In - ' will be seen, for example, thai the large vessels of the 



suprascapular region drain into the apex of the sac, but - of them 



small connections with the cervical plexus. In fig. IG these 

 connections are so much more abundant that thev exceed in qui 



Fig. 



pleXlls 



Ij mph 



i urns. 



Of 111" 



lymph 



lii ial 



.\i the 



S g. 



17.- Injection of the jugular lymph sac and the cervical lymphatic 

 of a foetal pig 7.5 cm. long to show the relation of the developing 



inds i" the jugular sac After A. II. ('lark (24). Magnified 5 

 -. Fixed in 10 per cenl formol and cleared by the Spalteholz method. 



iex of the sac, which is now a lymph gland In the posterior triangle 



neck; the anterior curvature of the sac, which is now a deep jugular 



gland, Ilea behind the sternocleidomastoid muscle. C. p. = super 



en leal lymphal Ic plexus, which will become a .uronp of lymph glands. 



i erebral end of the cervical plexus a developing facial l> mph gland; 



lympho-glandula submaxillaris. 



.1 pass i" the sa< itself. This poinl of the anastomoses i 

 the 'Illicit It groups of vessels is well shown in fig. 5 (Sabin 130), where 

 practically all of the superficial lymphatics in the embryo pig 5. 



