266 
alvéolisées, tout comme les granules ou blocs formant la périphérie 
du nucléole. Le réseau du noyau forme donc une trame tendue entre 
des points d’attache qui sont disposés, @un cöte, a la périphérie du 
nucléole, et de Pautre, a la périphérie du noyau lui-méme. A la pro- 
phase, on observe que les granules situés a la périphérie du noyau se 
confondent peu a peu avec des chromosomes apparaissant a la péri- 
phérie du noyau, et disposés en cercle. 
Nachdruck verboten. 
Multiple Renal Arteries. 
By GeoreE M. Gray, M. B., Ch. B,, 
Demonstrator of Anatomy, University of Glasgow. 
With one Figure. 
The following case of multiple renal arteries seems worthy of note 
from several points of view; from the comparative infrequency of this 
particular type, from a morphological aspect, and lastly, practically, from 
a surgical standpoint. 
The case occurred in an elderly male subject in the dissecting-room 
of Glasgow University and my attention was drawn to it by the 
students dissecting the body, Messrs TayrLor and Rommete. When I 
first saw the condition the left kidney had been removed and the arteries 
almost completely dissected out on the right side. After a little dissec- 
tion of the vessels in the hilum of the right kidney the following con- 
dition of affairs was seen. 
The right kidney was supplied by tive distinct arteries all arising 
independently from the aorta. The first arose at a level slightly below 
that of the superior mesenteric artery and ran without branching out- 
wards and slightly downwards behind the inferior vena cava to enter 
the inner aspect of the convex upper end of the kidney. The calibre 
of this artery was about 3 mm. As it passed over the right crus of 
the diaphragm it gave off a branch to the suprarenal capsule, which 
seemed to receive from it its sole supply. 
The second artery arose about 1,5 cm below the first from the 
right side of the aorta. Its calibre was about 6 mm, that is to say 
about the calibre of the average normal renal artery. About 5 cm from 
its origin it divided into two branches, upper and lower. The upper 
branch about 1 cm from tne kidney, gave off a small offshoot to the 
mesial border above the hilum, while the main vessel passed into the 
upper part of the hilum itself. The lower branch entered slightly below 
and dorsal to the upper branch into the posterior lip of the hilum be- 
hind the renal vein and ureter. Before piercing the gland it divided 
into two branches which entered the kidney separately. 
The third branch arose from the aorta in front of the second and 
at a slightly lower level. It passed out behind the inferior vena cava, 
