128 



Inasmuch as the deep system collects uo lymph from the foot, 

 no main stem is present distad of the knee. One or two trunks 

 formed on the caudal aspect of the knee-joint by tributaries from the 

 muscles and bones of the crus, pass along with the femoral artery into 

 the abdominal cavity 

 where they enter the 

 lumbar gland laterad of 

 the origin of the femoral 

 artery. Another trunk 

 leads from the region 

 of the knee to the popH- 

 teal gland hidden in the 

 fat mass between the bi- 

 ceps femoris and semi- 

 tendinosus muscles. 



The deep system 

 collects the lymph from 

 the muscles and bones . ^/ 

 of the entire leg except />''^ 

 the foot. 



Fig. 1. Fig. 2. 



Fig. 1. Network of lymi^h vessels on the tendon of the biceps femoris muscle. 

 a, point of insertion. 



Fig. 2. Photograph of the lymph vessels iu the skin of the cat's ear. The large 

 black area shows point of injection, the small black areas the breaking of vessels. 



It is worthy of note that while the number of lymph glands in 

 the cat is not more than one-tenth that in the human, yet the capil- 

 lary net work on the tendons seem to be quite as rich as in man 

 (Fig. 1). The sub-cutaneous network, while not so fine meshed 

 as that of the tendons is very thick in many places. It is most 

 satisfactorily demonstrated in the ear (Fig. 2). 



Lafayette College, Easton, Pennsylv., U.S.A., July 19, 1902. 

 (Eingegangen am 23. August.) 



Abgeschlossen am 3. Oktober 1902. 



Frommanasche Buchdruckerei (Hermann Pohle) in Jena. 



