ON FIVE BALLOON ASCENTS IN 1863. 503 
Tasxe IX. (continued.) 
Between 19,000 and 20,000 feet. 
E | Temperatures of the 
Dew-point temperatures dew-point as deter- 
mined by 
| 
Calculated Observed Dry and Wet (free) 
Date. Height. from by above that by 
B.|5g| 8/28 || BS] § | 28 
se lus | 2 | 32 Ce jing | ae 
ae a5 r= =| ae se | 30 
S. dl ed ee Be |} Se. | 28 §& 
E PS | ge | oe | Ba | ge] ee 
=) =) | AR ae | an ag me 
d hm feet. ant ° ° ° ° ° ° 
. . | - 
June 26 1 41°10) 19544 —12°5} — 95) — 370 
I 42 q--s |—19'6 = go}! —10°0 
I 434 jess |—'5°9 | 13°0|| ia 
Zak 19901 15°8 | 18-0} «so |= 2°2 
2 124 ea 12°6 150 || oe [= 2"4 
Between 20,000 and 21,000 feet. 
| Sune .26 1 44 | 20648 |-2°5| és | a |-1370]| te | He |+ O°5 
Between 21,000 and 22,000 feet. 
| June 26 1 46 | 21266 |-228 | it ] oa |-13°0|| 33 | on = 98 
Between 22,000 and 23,000 feet. 
22884 
22965 
March 31 5 27 
June 26 1 55 
rela: 
10°7 
“bpd 
ot [+ 2°5 
Between 23,000 and 24,000 feet. 
June 26 1 54% 2°5 + 3'0 — 05 
5 
43) 23143 ae Ef tailae eS 
| 
