

'.'. - |6lH. 



""t :• pig o 5 cm. long. The - - • iowm in the depth 



and the swollen anterior curvature (deep jugular gland) and apex 

 (gland of the posterior triangle) stand out through the relativelj small 

 lined mil: ve« 



16. -Injection of the jugular lympb sac. the superficial cervical 

 plexus, and the superficial lymphatic vessels in the neck of a total pig 

 5.5 cm. long. After a II. Clark (24). The specimen was fixed in forma- 

 lin l" per cent formol and made transparent by the Spalteholz method. 

 Magnified , times. The figure is to bi compared with fig. 5 In the \m< r 

 Journ. "i Anat.. L904, Vol. 3, p. 118, which shows a complete injection of thi 

 superficial lymphatics of the same stage. A. s. = apex of the lymph a< 

 whicb forme the lymph i:Ian<l of the posterior irianule of the neck; A. c. = 

 interior curvature of the lymph sac, which forms the deep jugulo-pharyngeal 

 lympb gland; C. p. superficial cervical lymphatic plexus; s. g.= lympho- 

 dular Bubmaxillaris; S. s. = stalk of the jugular lympb sac. 



I'' 1 ' the apes of the sac superficial lymphatic vessels grow both 



from the dorsal and fr the ventral border. Those from the dorsal 



and caudal border make a large plexus of superficial lymphatics which, 



