HEMOLYMPH NODES AND ACCESSORY SPLEENS 



253 



and at the extremities were examined it follows that there should 

 not be any question for skepticism as to the validity of the 

 results in these eases. Moreover, to date over seventy dogs and 

 approxunately one hundred cats taken at random, have been 

 examined in order to obtain a basis for reliable judgment 



Only a few specimens of the lymph nodes taken from dogs 

 from which the spleen had been removed, were examined micro- 



TABLE 1 



Splenectomies on dogs 



^ The necessity for injecting the lymph nodes precluded a satisfactory micro- 

 scopical study, of course. 



scopically. In these nothing unusual was recognized and this 

 was also true as to gross appearances of the lymph nodes in all 

 the animals operated on except two. Moreover, the lymph 

 glands in the two controls and in other dogs of similar ages were 

 in all respects similar in gross appearance. Vincent (43) too 

 concluded that "In spleenless dogs there was no apparent change 

 in the Ijinphatic glands of any part of the body, neither in the 

 direction of hj^ertrophy nor increased redness. On microscopical 

 examination the hemal lymphatic glands presented the features 

 of those in the normal dog." In a footnote Vincent adds: 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 16, NO. 2 



