152 DONALDSON. (Von. xe 
TABLE 25. 
Average of two hemiencephala in a solution of 24% bichromate of potash plus 
+% sulphate of copper, kept at 38° C. 
Time. — Days. PERCENTAGE INCREASE. 
T.12 13.0 
3-9 14.2 
59 15.2 
10.9 14.4 
Nitric acid and zinc chloride were also tried. 
TABLE 26. 
Average of observations on two hemiencephala in 980 c.c. aq. dist. plus 20 c.c. 
nitric acid, sp. gr. 1.42. 
Time. — Days. PERCENTAGE CHANGE. 
9 tee 7Ea(Gs) 
3.09 st LeOn(Cs) 
5-5 — 1.0 (c.) 
12.09 — 2.4 
PABEE 27. 
Average of observations on two hemiencephala in 1000 c.c. of a saturated 
solution of zinc chloride, in 95% alcohol. 
Time. — Days. PERCENTAGE DECREASE. 
0.9 13.8 
3.2 21.4 
5:9 24.1 
9:9 25.5 (c-) 
Nitric acid in the proportion given, certainly causes very 
little disturbance in the weight of the sheep’s brain, while 
zinc chloride dissolved in strong alcohol, produces a decided 
loss of weight — almost as great as that found from alcohol 
alone. 
Below in Table 28 is given a series of fluids in which the 
entire encephala of the sheep were placed for 48 hours. 
During this interval the specimens were weighed five times. 
The terminal weights are alone given in order to show the 
general action of the fluids employed. 
