SULPHURIC ACID FOR WATER. 
November, when the one under the exhausted 
receiver was found to have lost 30.6 grains, while 
that under the unexhausted receiver had only lost 
4 grains. Both experiments were continued, and 
the losses of weight afterwards found to be as 
follows :— 
As I could not, on the 30th March, detect any 
loss of weight to have taken place in either ex- 
periment, between then and the 23d, and as the 
receiver. 
re ey Grains. 
Nov. 22 37.9 
« 99 42.4 
Dec. 6 44.9 
“« 13 46.0 
“« 20 46.9 
HOT 48.1 
1838. 
Jan. 3 49.2 
« 10 50.0 
«® 17 50.2 
424 50.2 
“« 31 50.5 
Feb. 7 50.6 
“ 414 50.8 
“ 23 51.5 
March 2) 51.6 
6. 9 51.9 
“« 16 §2.3 
52.6 
52.6 
ed receiver. 
Grains. 
> 
6.9 
weighing. 
SE eature tol 
Range of temperature t 
Total loss from|Total loss from| which the dishes, the ob- 
1837 the dish under| the dish under} jects of experiment, wer 
‘ the exhausted| theunexhaust-| exposed between the pre- 
sent and next previou 
From 44° to 
45 
43 
43 
44 
49 
49 
39 
34 
34 
42 
42 
42 
40 
42 
46 
48 
46 
to 
48° 
53 
48 
45 
53 
54 
53 
49 
39 
39 
