‘ in every 1000 fect of elevation up to 29,000 feet. 
| 
August 21. | 
Cloudy. 
| 
Ascending. 
Descending. 
reel 
. 
ae 
2°2 32 
2°8 2°9 
28) 3°5 
Se 3° 
31 | 38 
3°38 | 36 
38 | 3°5 
4° | 40 
4° | 40 
41 | 46 
46 | 50 
43 | 54 
4°0 6'0 
Up to 
ON EIGHT BALLOON ASCENTS IN 1862. 
September 1. 
September 5. 
September 8, | 
State of the Sky. 
| 
Partially Cloudy. iain Cloudy. Cloudy. 
a al oS | 2 a ea 
B= | A: s ae Es} 
oes 3. | ge | a eg 
z g 3 3 g 3 
< A < a < A 
° ° ce) ° ° ie) 
08 ace a 
0'9 ss ts 
I‘o aoe ss 
I‘o aed vee 
I'l I'l : : 
R Ee 2° a 
ee rs 2°I Be 
“Fe oe 2°0 22 *s 
dae ae 2°0 2°2 “ 
see a 2°5 2°3 are 
onc ee 25 2°0 eee 
eee Ze 2°8 . see 
«os 2:3 2, | ieeae mee 
ae Het |p eon | eee nee 
one 2°5 2°5 || te 
* 2°5 2oB I ees ice 
: Zine | ace” posts sp 
see 2°8 > Jes dnd | Valuer 5 . 
ee 24 2°5 * oes 
- 2°83 3°1 eee rn 
Sse ar 26 sas F 
| a5 2°7 eae Gee 
Bre} Sass 4/0 Boia (lier 3 
co Fi eee 4/0 27% Wl Ws0 * 
aes is ace 3°5 2°8 Me Ae 
32 | 2°0 a55 370 37. 27 
«lal oie go nme Kan Wl cD | ic: din Gi 
47 see oh 3°2 41 = fifi 
6'5 72 | 34 |} 39 | 46 | 
Cloudy. 
Clear. 
At heights less 
than 5000 feet. 
a Pe Peis ss i. <gis eee Suto mae 
WMmdb wants * * 1 ay es 2 @ ° 
SU ss 
NE aro! * 
Tae Mran Decrease oF TEMPERATURE OF THE AIR 
When the Sky was Cloudy, 
1000 feet was 4°-5 from 7 experiments, or 1° in 
From 1000 to 2000 
? 
From 2000 to 3000 __,, 
From 3000 to 4000 
From 4000 to 5000 
These results do not differ very grea 
3? 
2) 
4°-2 
3° 1 
9 7 3) 9 32 
”? 10 9 33 3) 
re. 10 2? 29 9) 
”? 6 39 ” 33 
tly from the law of de 
451 
Mean (omitting July 17), 
Clear. 
Number 
of ex- 
At heights periments. 
exceeding 
5000 feet. 
eS | 
* 6 
ee! 
- 
NN OOD 
Berke RRO pcm cK OOMNAAAARARADR AAR DY NH HH 
Anam nn 
2292 feet. 
239 feet. 
244 feet. 
271 feet. 
323 feet. 
crement of tem- 
| perature, as found from observations on mountain-sides, viz. 1° in 300 feet. 
Up to 
From 1000 to 2000 
| From 2000 to 3000 
From 3000 to 4000 
From 4000 to 5000 
When the Sky was partially Clear, 
1000 feet was 7°-2 from 5 experiments, or 1° in 139 feet. 
5°38 
4°°6 
3B°4 
2-9 
39 
2 
9 
?? 
S> ST OF On 
3? 
189 feet. 
254 feet, 
295 feet. 
345 feet, 
2H2 
