Joty—On the Conservation of Mass. 45 
(9). Feb. 26th, midnight.—CuSO,, 25 grms.; H,O, 25 c.c. 
Readings: 60, 61, 62, 63, 63, 63, 64, 65, 65, 65, 65, 65, 64, 63, 62, 59, 56, 55, 
54, !, 53, 52, 50, 45, 41, 38, 35, 38, 33, 35, 37, 42,48, 57, 65, 77, 89, 102, 115, 
130, 145. 
aia 
SELLE 
7 
The night was gusty and wild. For one and a half minutes after complete 
descent of water the easterly drift is accelerated; then a rapid motion to west- 
ward. In reference to this experiment, it is to be observed that in gusty weather 
unsteady motions of the beam were frequently observed. 
