444A rEePort—1862. 
Taste I1I.—Showing the Temperature of the Air, as read off the curve 
drawn through the observed temperatures, and as read off the curve of 
most probable normal temperature, called adopted temperature, and the 
calculated amount of disturbance from the assumed law of decrease of 
temperature. 
Temperature of the Air. 
Ascending. Descending. 
Height, in feet, | 
Sovelod the oat ck ob Gated [pet Ob ‘ated 
° etween Circum- = Adopted ate | between Cirew ad Adopted ate 
° seryed Pree effect of cum P 
dimes. |*N€2S-| temp, | *™P- |‘Gsturb«| times. | *B0°5-| fempe | teMP- (Steeurb 
ance. ance. 
July 17. 9 9 ° : 9 ° 
26000 16:0 | 16°0 00 | 16"0-| 16°90 oo 
25000 1670 | 160 o'0 | 180 | 17°72 |+ 08 
24000 16°3 | 16:0 |+ o8 26°0 | 18°5 75 
23000 17a9 - | Od 1°8 27°99 | 19°8 8-1 
22000 19°5 | 16°2 2°3il = | 28-1 | 21-0 ar 
21000 2 24°1 | 16°8 7°3\| + 28°5 | 2275 6:0 
20000 r=] a= A271 | 1750 151 3 “3 286 | 23°9 47 
19000 a a) eke pian Wie Gre} 22°2 B =e 28°38 | 25°0 3°8 
18000 a = 35°2. | 17:8 17°4 3 = 29°0 | 26:2 2°8 
17000 « 2 32°7 | 1870 14°7 » ; 292 | 27°38 14 
16000 =| 31°9 | 18°5 134 5 29°5 | 2970 1+ 0o°5 
15000 S 21-2 1G 5 12°7 | 5 30°5 | 30°5 o'o 
14000 3 29°5 | 20°71 9°4.| a ars" | 140s oo 
13000 a 26°76) 20°75 52) 8 33°70: | 33°O O70 
12000 5 25°9 | 22°3 gO) 8 34°5 | 34°5 oro 
I1000 = 26:0 | 24°0 20 a iy 360 | 36°0 o"o 
10000 aL 26:2 | 26°0 o2|| 6 Gy NBG a aiEs (oho) 
gooo g 29°70 | 290 [oKe) 4g 2 
8000 © 32-0 =| 3270 fone) 5 = 
7000 Fa rs | 36°75 | 36°5 ool] * 
6000 a & 34°38 | 41°0 6-2 
5000 Sa(93953).| 452 59 
4000 4355/6 | Sao 6°5 
3000 “ 479 | 54°8 gt 
2000 oie) | 25h Hees 73 
1000 5 = 569 | 6471 Be 
° 61°5 | 7o.o |+ 8°5]| 
July 17.—The departure in this ascent from a regular progression is very 
remarkable. Below the cloud the decrease of temperature was pretty well 
uniform ; on passing out of it there was an increase of 6°, and then the decrease 
was resumed. At 10,000 feet the temperature was 26°, and there was no 
change in the next 3000 feet; then a very remarkable increase took place, 
till at 19,500 feet with a temperature of 42° the rise was checked, and then 
declined rapidly to 16° at 5 miles high. In the descent a disturbance from 
the regular increase of temperature was met with at the height of 24,000 
feet, and continued to 17,000 feet; at 13,000 feet clouds were reached, and 
no observations were taken below 10,000 feet. 
The dense clouds which covered the earth caused an apparent loss of 
temperature of about 81°; and the effect of a warm current of air, which 
was first met with at the height of 11,000 feet, amounted, at 19,500 feet, 
to fully 25° warmer than would have been had this intermediate current of 
warm air not existed. The excess of warmth is shown at the different 
elevations of 1000 feet in the 6th column of the Table for this day. 
