ON EIGHT BALLOON ASCENTS IN 1862. 
477 
Tasre IX. (continued.) 
Between 11,000 and 12,000 feet. 
Dew-point Temperature of the Dew-point as deter- 
Temperatures mined by 
} Dry and Wet | 5 
Calculated | Observed || Dry and Wet (free) |~77 ® 3 
(aspirated) | 
: from by above that by Lees that by g is « 
Date. Height. fit 2 Ee Res 
Rey ». : 5 sags * . = a3 
o on we he om 7 i oI = BS 3 
B|ES) 2/23 | FE) | 2e| oe | Se eek 
~~ m > 2 = a 
92) B2)58| 32 | 28 |58 | 22/58 | 28 See 
aut ss, ) 2H =] aa, | q > an |e 
p | pe | eB BE] pe) ee) SE) eB! BE |e 
A A~ |An | ee | a~ | an | ea | Am] ae lA 
d h m feet. ° ° ° ° ie} ° ° ° ° ° 
July 17 10 2 11792) 23°9 2570|| . apy) | er 
Between 12,000 and 13,000 feet. 
July 17 10 3 12709| .. 19°5| 21°0 | . i ° oe [15 
Aug. 18 2 21 | 12364) 22°2| 22°2 - | 29°0]} o°0 “ oo |— 68 
3 36 | 12453] 12°6| .- ee | 14°0 . —14 
Sept. 5 1 24 | 12568] .. | 14°5 (250) 4A « |—10% 
July 17 10 4] 13000] 169] .. | 210] 22°0|| .. |—4'r|--5'1 —10 
IO 5 |13467| 24°9] .. 22°5 || os - (+24 
Aug. 18 3 34 | 13320| .. 9°8 12°5 || o- ie oe as, (27 
Between 14,000 and 15,000 feet. 
| July 17 10 8 | -4544 
24°0| 267 | 20'5| 24°0 
|-27 +3'5 00 +62 +27 |-3's | 
Between 15,000 and 16,000 feet. 
July 17 10 11 
15704. 24°6 | 22°7| 22'0| 21°5 +19 |+26|+3°3 to7 +14|-+0-7| 
Between 16,000 and 17,000 feet. 
July 17 10 15 
16914 
Aug. 18 2 31 
24°3| 19°8 
23°0 
—o'7| « 
20°8 
6°0 
+4°5 |+1°3 |+3°5 
oe oe 
—3'2|—1'0 |+2°2 
«- |—-6 
7 
Between 17,000 and 18,000 feet. 
& 
Between 18,000 and 19,000 feet. 
Aug. 18 2 32} 
2 345 
18°83 
24°0 
tet +20'2 
ae 
—i- 
eee oe 3°5 
+205 
July 17 10 25 | 18844] 24:9] 24°4| 25°1| 24°2 ||--0°5 |—o°2 |-+-0°7 |—0'7 | +-0'2|-+0'9 
Aug. 18 2 35 | 18039 — 574) -- Z°O|| oe se =- oe | 84) 
ZO leew cee | 0 In5l tore (oye) os an 
—11'5 
