OKGANS OF THK BODY. 



481 



As regards the lymphatics of the stomach, only the deeper were known 

 until quite recently. 



According to Teichmann with 

 whose views my own observations are 

 in perfect harmony there exists be- 

 neath the peptic glands a network of 

 lymphatic canals, about '0305-0-0501 

 mm. in diameter, which communicate 

 with a deeper wide meshed network of 

 passages of larger calibre, measuring 

 transversely, from 0-1805 to 0'2030! 

 From these latter the true, valved 

 lymphatic vessels are then developed, 

 which gradually perforate the muscular 

 tunic to follow subsequently the two 

 curvatures of the stomach. 



For many years this was supposed to be the true arrangement of parts, 

 and numerous efforts were made to prove that the superficial veins of 

 the stomachal mucous membrane presided over the absorption of the 

 organ. 



Fig. 468. Undermost half of peptic glands 

 from the dog, with their long meshed 

 capillary networks. 



Fig. 469, 



-Lymphatic vessels in a vertical section of the mncous membrane of the stomach of an adult 

 man (original drawing by Loven). 



But quite recently this difficulty has been got over at the hands of an 

 excellent Swedish observer, Loven, whose dexterity we may thank for 

 the injection of these passages, and that of the highly developed lym- 

 phatic, apparatus, whose radicals ascend almost to the surface of the 

 mucous membrane. The arrangement of these will be easily understood 

 from fig. 469, and no further explanation need be given. 



The nerves of the stomach, derived from the vagus and sympathetic, 

 are arranged in the submucous tissue in a plexus studded with numerous 

 minute ganglia (Remak, Meissner). The greatest obscurity, however, still 

 remains as to the ultimate termination of the fibres. 



