158 DONALDSON. [Vor. IX. 
We shall now present a series of tables giving the change 
of weight under the action of various fluids. 
The tables have several uses. They show in the main the 
similarity of the reactions in the case of man and the sheep, 
a similarity which is close enough to justify us in using the 
sheep’s brain for further investigation. 
They offer records from which the fresh weight of hardened 
human brains can be in some cases inferred, and they empha- 
size certain peculiarities in the reactions which appear to 
belong to the human encephalon by virtue of its larger size. 
TABLE 36.— BRAIN X. 
Male. Age, 35 years. Death from diffuse nephritis. In hardening fluid 24 
hours after death. 24% solution of bichromate of potash. Encephalon subdivided 
into two cerebral and two cerebellar hemispheres and the stem. Subdivision as 
in the sheep. Each portion weighed separately. In the tables, the average 
changes in the cerebral and cerebellar hemispheres are alone given. 
PERCENTAGE INCREASE. 
Time.—Days. 
HEMISPHERES. CEREBELLUM. STEM. 
Andee SE eee 
2.0 20.1 19.3 17.2 
52 26.0 29.1 22.0 
30 32.3 \(c:) 28.5 (c.) 
74. 32.3 28.7 28.5 
96. (c.) 
322. 31.2 
539 31-4 32.2 30.2 
This shows a less increase than was found in Table 35, 
where the encephalon was also subdivided, but here a solution 
of 24% bichromate of potash was employed. In man, there- 
fore, as in the case of the sheep, the higher percentage of 
salts causes the smaller increase in weight. 
