MINOT : SINUSOIDAL CIRCULATION. 
207 
nent in the adult. In the rat and mouse I find connective tissue to 
be perhaps wholly absent, certainly it is minimal in amount, if pres¬ 
ent at all, between the endothelium and the “ sympathetic ” cells, 
Fig. 11. Supra-renal capsule of a rat, preserved in Hermamvs fluid. Sec¬ 
tion of the medulla. Sy, sympathetic elements; Si, sinusoid; enclo, endothe¬ 
lium. (From Prof. Schaper’s specimen, 839.) 
# 
Fig. 11. The figure is taken from a preparation for the use of 
which I am indebted to Prof. Schaper, and it shows the character 
and relations of the sinusoids with the greatest clearness. 
Although the fact that the walls of the vessels within the organ, 
consist only of endothelium, was explicitly pointed out by Pfaundler, 
’92.1, it is still often overlooked both in special papers and in text¬ 
books of histology, for example, the manuals of Stohr, Piersol, 
Berdal, and others. In the American edition of Stohr (Philadel¬ 
phia, 1898) Schaper has added a figure, p. 198, in which the rela¬ 
tions are correctly shown. The same commendation applies to the 
figure given of the supra-renal of the dog by Bohm and Davidoff 
