263 
Externally the upper half of the glomerulus is seen to be com- 
posed of freely anastomosing capillaries, somewhat more pronounced 
on the left than on the right side. The capillaries of the lower half, 
except on the posterior surface, are longer and more direct. The 
projecting loop of capillaries mentioned above, the course taken by 
the efferent vessel within the glomerulus, and the tendency of many 
of the external capillaries to turn toward the right side, give the 
glomerulus the appearance of being twisted to the right. Except on 
the superior surface where the left half is a little above the right, 
the spherical form is well preserved. Lobulation where it appears at 
all is superficial. (Fig. 1.) 
Fig. 3. Diagram of the wax model seen from the left side. Enlarged 444 times. 
The right lateral group of capillaries is turned back from the main groups. The group 
e. f. is a connecting loop turned over to expose deeper capillaries, The lines marked 
Figs, 4, 5 and 6 indicate that Figs. 4, 5 and 6 are taken from those planes, representing 
sections 7, 17 and 30 respectively of the original series. 
The capillaries of the glomerulus can be roughly divided into a 
right, a left and a median group, corresponding to a right branch 
(Fig. 3 A) a left branch (Fig. 2 B) and a median branch (Figs. 2—3 C) 
of the afferent vessel. Two additional branches, a right lateral branch 
(Fig. 3 D) and a left lateral branch (Fig. 2 E) take part in the 
formation of the lateral group of the corresponding side and of the 
median group. All five branches arise from the afferent vessel at 
the same time though at different angles. The distances between 
their points of origin are not the same. — According to Lupwie the 
glomerulus is composed of from 4 to 8 groups of blood-vessels. 
Each main branch from the efferent-vessel subdivides almost 
immediately. Each of the two lateral branches (D and E) has three 
