ON EIGHT BALLOON ASCENTS IN 1862. 44.7 
Tas rE III. (continued.) 
Temperature of the Air. 
Ascending, Descending. 
Height, in feet, sa ee 
= ated |B ob eel 
sea. |Between| ,. - ate etween|,- = ate 
what |Citcum-| ...7oq |Adopted |Circum-| , Adopted 
times, | Stnces. temp, pnd Guehe due. RpSneeRs rig penis isturb. 
ance, ance. 
August 21. é a fs = = Rn 
14000 D7 ale [olze) 23°F) 2359 role) 
13000 5 S 24°0| 24°0 oo r= a 26:0} 26:0 oo 
12000 2 5 26:2} 26-2 role) 3 g 29°2| 29°2 o'o 
IIcoo a = 29°0| 29°0 oo 5 Fa 925%) 3acr oo 
10000 cre eo 3r8| 31-8] ool] aoe = 35°6| 35%6| oro 
go0o 4 2 34°3) 34°3| ool] & & | 391) 394] oo 
8000 2 | 374) 3741 coll 2 (=|) azo) ag] Mee 
7000 + 412] 412 oxo) S In 46°5| 46:5 o°0 
6000 ie In 40°0| 45°0;— 50]| ~$ |cloud.| 40°5| 5o0°0|/— 9°5 
5000 SS |cloud.| 4375} 49:0 Bis s = 43°5| 54:0] 10°5 
4000 + 47°72] 53:0 5°8 || 3 2, 47°09! 58:0| I1'0 
3000 z §ro| 5771 63|| 2 g 50:1} 62°6| 12°5 
2000 gz |Below| 545] 61-7; 72] 8 ps 54:0] 67°6| 13°6 
1900 cloud.| 58:0} 66:0 8-0 || oS 58'0| 73°6| 15°6 
° 61°8| Joo|— 8-2 | 5 62°0| 79'°0|—17°0 
September 1r.| , g a 
4000 oe 47°5| 47°5| ool 2F 46°5| 46: 
g ae ar 5 robre) 
3000 2.8, | << 50°7| 50°7 Qo} 78 : 48°5| 48-5 oo 
2000 PP es o 54°5| 54°5 O70 || “Bu oe 515] 51°5 fhe) 
1000 ew o 5972} 59°72 O0}) Sw 
° = S “ 65°7| 65°7 oo! BS 
. bo, 
sooo | a8 | 228 zie 
gooo | fg |Esze| 535] 53°5| 0 g=&| 53°5| 535] . oo 
2000 g© 23/5 é 54°0| 54°0 [ohe) a: s 
1000 ° % |3 er Ess 
° FS |ése : 5 EE 
2 1 oe 
August 21.—The sky was cloudy, and the decrease of temperature was 
nearly uniform till the clouds were reached; on passing through them the 
usual increase of temperature took place to the amount of about 5°; then 
there was no particular interruption till the height of nearly 3 miles was 
passed; at this elevation the balloon continued for half an hour, during 
which time the temperature increased 3 or 4 degrees. In the descent no 
marked interruption was experienced from a regular increase of temperature till, 
the clouds were entered; on passing through them a decrease of temperature 
of 10° was experienced, and after this the regular increase was resumed—the 
same temperatures being met with at the same elevations as in the ascent. 
The increase of temperature therefore experienced above the clouds, as the 
sun rose, had not penetrated in the least degree below the clouds; therefore 
the effect of the presence of cloud in the descent was much larger than in the 
ascent, as will be seen in the Table. 
September 1.—The sky was covered with cirrostratus clouds which were 
never reached; there was no marked interruption in the regular decrease of 
temperature either in the ascent or descent; at the time of the second ascent 
the balloon was situated between two layers of clouds, and rain was falling 
upon it, which had the effect of equalizing the temperature, as no change of 
temperature took place in ascending from 1000 feet to 3000 feet. The curves 
