146 LYMPHATIC SYSTEM. 



vein. On the left side, the whole of this lymphatic joins the 

 thoracic duct of the same side, but, on the right, one part of it 

 goes into the inside of the jugular vein a little below the angle 

 which that vein makes with the subclavian. 



This system in birds, differs most from that in quadrupeds 

 in the chyle being transparent and colourless (LXVT), and in 

 there being no visible lymphatic glands, neither in the course 

 of the lacteals, nor in that of the lymphatics of the abdomen, 

 nor near the thoracic ducts. 



For the sake of those who may incline to prosecute this in- 

 quiry farther, I shall relate the method by which these vessels 

 may be demonstrated ; and that is, having chosen a young and 

 very lean goose, and fixed it upon a table, let the abdomen be 

 opened whilst it is yet alive, and a ligature be passed round 

 its mesenteric vessels, as near the root of the mesentery as 

 possible. The lacteals will begin to appear near the ligature 

 in a few minutes after it is made, especially if the bird has 

 been well fed three or four hours before the experiment. The 

 lymphatics in the neck may be shown in the same manner, 

 that is, by making a ligature on the jugular vein at the lower 

 part of the neck ; and to be more certain of including the 

 lymphatics which are near it, we must take care not to pass 

 the needle too close to that vein. 



(LXVI.) See Note LIX. 



