APPENDIX 
67 
III. The Experimental Production of Hemolymph Nodes and Ac- 
cessory Spleens. Journal of Experimental Zoology, vol. 16, 1914. 
After a critical review of the literature on the above subject, the re- 
sults of a series of experiments on guinea-pigs and dogs are recorded 
and discussed. No hemal nodes or accessory spleens were formed as re- 
sult of splenectomy in young dogs, and no hemal nodes or reddened 
lymph nodes were produced in guinea-pigs by the repeated injection of 
toxine and other substances, or by a hundred or more successive with- 
drawals of blood in the sheep; but that changes may be produced in 
lymph nodes by repeated bleeding is suggested by the studies of Smith, 
indicating a lowering of the resistance of erythrocytes after the with- 
drawal of blood. However, it is more than likely that the amount and 
frequency of that loss are very important factors in the determination of 
the character and extent of the changes in lymph nodes ; a conclusion 
which would also seem to be amply justified by Freytag's observations. 
IV. Hemal Nodes in some Carnivora and Rodents. Anatomischer 
Anzeiger, Bd. 45, 1913. 
An examination of a large series of cats and dogs of all ages failed 
to reveal any hemal nodes, other than supernumerary spleens, in these 
animals. Similar conclusions were also reached regarding mice, rats, 
guinea-pigs and rabbits, but as a result of an examination of a much small- 
er number of animals. The structural relation of supernumerary spleens 
and hemal nodes is also considered briefly, and the occurrence of mixed 
lymph and hemal nodes referred to. The retrogression of blood and 
chyle in the larger lymph vessels of the dog is reported, and its signific- 
ance in the production of mixed nodes emphasized. 
Errata in this article as published in the Anat. Anz.: Hemal Nodes in 
some Carnivora and Rodents. Studies on , Hemal Nodes, III. Anat. 
Anz., No. 12, Bd. 45, 1913. 
P. 261, line 8 — Delete the period. 
P. 263, footnote reference (2) — Read Meyer, Anat. Rec., Phila., 
1914, instead of 1913. 
P. 263, line 4 — Read obtained, instead of contained. 
P. 268, footnote reference (1) — Read Meyer, The Hemolymph 
Nodes of the Sheep. Studies on Hemal Nodes, I. University Publica- 
tion, Stanford University. 
P. 269, line 3 — Read these species. 
P. 271, reference 34 — Line 2, add der MHz to the title. 
