5 
and intertwine with the fibrils of the connective tissue septa that 
embrace the cell groups. According to HEnLE!) the cortex is com- 
posed of “Säulen” and “Schläuche”. The columns correspond to the 
Zona glomerulosa of ARNOLD and are separated by thick processes 
from the capsule, the tubes, on the other hand, are only separated 
by the blood vessels and the homogeneous membrane which encloses 
the cells. In the medulla HENLE found tubes with a membrane and 
a considerable amount of interstitial tissue between them. STILLING ?) 
described stellate pigment cells in the capsule and large septa of the 
sheep’s adrenal which give the surface of the organ a mottled appear- 
ance, but somewhat earlier, however, similar cells had been found in 
the capsule of the cow’s suprarenal by GRANDRY. 
Methods. 
For the study of the reticulum I have used principally the di- 
gestion method of Mau and that of SPALTEHOLZ?). In Maur’s 
method frozen sections of the fresh gland from 40—80 u thick are 
digested for 24 hours in pancreatin *) and then carefully washed in 
distilled water. The sections are then placed in a test-tube half full 
of water and thoroughly shaken in order to remove all of the cellular 
debris, after which they can be coaxed up on a slide and allowed to 
dry. A few drops of the following solution are then allowed to dry 
on the preparation: 
Picric acid 10 gms. 
Absolute alcohol 33 ccm. 
Water 300 ccm. 
The sections are then stained for about half an hour in a solution of 
acid fuchsin which is made as follows: 
Acid fuchsin 10 gms. 
Absolute alcohol 33 ccm. 
Water 66 ccm. 
The section is washed in the picric acid solution, dehydrated and 
cleared in absolute alcohol and xylol and mounted in balsam. 
1) Hexte, Anatomie des Menschen, Bd. 2, 1873. 
2) STILLING, VircHow’s Arch., 1887. 
3) Horst, Arch. f. Anat. u. Physiol., Anat. Abt., 1897, and SpALTE- 
HOLZ, ibid., Suppl.-Bd., 1897. 
4) Parke Davis and Co.’s Pancreatin 5 gms. 
Bicarbonate of soda 10 gms. 
Water 100 ccm. 
