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subdivisions which are soon lost in the three main groups. They have 
in general the same arrangement. 
In the upper half of the left group (Figs. 1—2) there is a com- 
plex network of anastomosing capillaries. In the right group (Fig. 3), 
which is smaller than the left group and lies at a lower level, the 
course of the capillaries is more direct. The capillaries of the median 
Fig. 5. 
Figs. 4, 5 and 6 Camera tracings of 
sections 7, 17 and 30, showing the capillaries, 
reticulum nuclei and BowMAn’s capsule, En- 
larged 444 diameters, 
group nearest to and farthest from 
the origin of the median branch 
(C) are in general longer and freer 
than those of the other group. The 
intermediate capillaries are short 
and the anastomoses frequent. 
Fig. 6. In addition to the many con- 
nections between capillaries of the 
same group the three groups or lobules are intimately connected with 
one another by numerous anastomoses. The capillary connections be- 
tween the median group and the right group on one hand (Fig. 2), 
are of the same frequency, although unlike those between the left 
group and the median group on the other hand (Fig. 3). At one 
