AFFLUENTS OF TEE THOEACIC DUCT. 641 



lobules comprised within the two layers of the mesentery, and placed on the 

 track of the arterial and venous divisions. 



Originating in the texture of the mucous and muscular tunics, the lymphatic 

 radicles gaio the glands of the small curvature of the colon, and escape from 

 them as efferent branches, which pass in great numbers into the mesentery. 

 These efferents, or at least some of them, traverse the lymphatic glands 

 placed on the course of the blood-vessels, and collect, near the origin of the 

 posterior mesenteric artery, into several somewhat voluminous branches, 

 which join the divisions of the subluinbar glands, or those of the large colon. 



2. Glands and Lymphatic Vessels of the Large Colon. 



There 1 is seen on this enormous viscus a double chain of glands, lying 

 beside the colic arteries, and numerous small lobules disseminated at a short 

 distance from the principal glands, and on the track of the collateral 

 branches furnished by these two vessels. 



Received at first, for the most part, by these lobular bodies, the lym- 

 phatics which have emanated from the tunics of the viscus afterwards join 

 the principal glands, from which they emerge in forming several large 

 satellite branches for the colic vessels. Only two or three in number at the 

 pelvic curvature, these branches are increased to ten or twelve on arriving 

 near the origin of the colic arteries. It is from the union of these vessels 

 with those of the small intestine, that the two large mesenteric trunks 

 (Fig. 299, A, c) arise, which, with the branches emanating from the sub- 

 lumbar glands (Fig. 299, B), form Pecquet's reservoir. 



3. Glands and Lymphatic Vessels of the Caecum. 



There exists, on the track of each caecal artery, a moniliform series of 

 glands, farther apart from one another than those of the double colic chain, 

 to which the vessels coming from the caacal membranes are directed, and 

 from which several long satellite branches of the blood-vessels, that 

 proceed to the same trunk as those of the small intestine, depart. 



4. Glands and Lymphatic Vessels of the Small Intestine. 



The glands which receive the lymphatic vessels from the small intestine 

 are very large and abundant. About thirty in number, of a grey colour, 

 very compact, fusiform, often bifurcated at their superior extremity, these 

 glands are placed in the texture of the mesentery, near the origin of the 

 great mesenteric artery, from which those belonging to the portion of 

 intestine nearest the end of the viscus are most distant. The latter also 

 possess, in addition, fifteen special small glandular lobules, dispersed on the 

 track of the ileo-csscal artery. 



We have already noted the richness of the vascular apparatus which 

 rises from the wall of the small intestine, towards the mesenteric glands 

 It must be added that these glands give rise, at their superior extremity, to 

 large emergent branches, two or three for each, which soon coalesce to make 

 more voluminous branches that concur in the formation of the two intestinal 

 roots of Pecquet's reservoir. 



5. Glands and Lymphatic Vessels of the Stomach. 



There are two classes of lymphatic glands for the stomach 1, Several 

 large glands situated on the small curvature of the organ ; 2, A series oi 



