Hygrometry. 
33 
Hvgroscopes. Thermqscopes. 
Whalebone 
Whalebone 
Quickfilver. 
Water* 
Slip. 
Thread. 
Extreme 0 
0,0 drynejs. 
Boiling 0 
0,0 point • 
5 
12,1 
5 
9»3 
10 
3 0 ’ 1 
10 
18,3 
15 
41, r 
*5 
26,3 
20 
5 1 * 1 
20 
35 »° 
25 
59 >* 
25 
42,7 
3 ° 
65,6 
30 
49,2 
35 
71,1 
35 
5 6 >7 
40 
7 6 >5 
40 
6 3 » r 
45 
81,8 
45 
69,0 
5 ° 
§ 5.8 
5 ° 
74,5 
55 
88,8 
55 
79 >* 
60 
9 l *3 
60 
83,8 
65 
93>3 
65 
87,9 
7 ° 
95 > 6 
70 
91,8 
75 
97 > 6 
75 
95 ,° 
80 
98,6 
80 
97,5 
85 
99, 6 
85 
98,9 
90 
100,1 
90 
99,9 
95 
100,5 
95 
100,5 
Extreme 100 
ioo* moijlure . 
Freezing 100 
ioo# point . 
51. The firft part of that table (hews, the great fteps of the 
thread of whalebone , comparatively with thofe of th ejlip of the 
fame fubftance, at the beginning of their correfpondent increafe 
in length ; but the thread relents by degrees, and a nearly Jla- 
tionary ftate fucceeds, in which, while this hygrofcope moves 
firft 1,9 degree from 98,6 to 100,5, then retrogrades 0,5 
Vol. LXXXI. F degree 
