ON EIGHT BALLOON ASCENTS IN 1862, 465 
Taste VII. (continued.) 
Hygrometrical results. 
Ascending. Descending. 
=e in feet, 
above the mean 
Tempe- . 
level of the sea. a beatae: iene GH a one aainis Girona ore arene a panes 
times, | S*nces. ae “| vapour, ero times. | t#nces. perce vapour. noe 
August 18, ps in. PRP site 
11000 eve 26°0| “I41] 59 ret | one 24°5| °132| 51 
10000 ae 28'0| °153| 58 as) eee 27°0| °347| 51 
goo0o s Ay 31°8| *179| 63 45 28°8| *158] 49 
8000 S- ne 33°9| “195| 65 poe | oe 37°0| *220| 61 
7000 a4 35°9| °211| 68 wt tee 37°0| *220] 53 
6000 a, a 4 38°0| °229] 7I so 8] oe 475) caeei gat 
5000 an 4r'o| °257| 75 BS coe 41°5| °265| 66 
4.000 Shel | Ree eee *329| 91 : — 46°6| °318| 76 
3000 g ™ | cloud 5070} *361| go 
2000 ce ee 510] °374) 79 
1000 ome 52°5| °396| 72 
° F 57°0| °465] 62 
23000 eee |— 8'0}| °029 
22000 «. |—I0'0| 026 
21000 ee |—ITo| *025 
20000 see? i sO] LO2g)|" 22 
Ig000 been [= 270 O40) 22 
18000 F 1°8| °047] 30 sh vee To} 046] 31 
17000 zs 8:0] *062| 27 ie 370] 050] 32 
16000 5 1470| ‘082| 42 g = Gol “osaiieag 
15000 a) 1g'2| *104] 52 ai g 7'0| *060| 34 
14.000 AR 23°8| *128| 61 a g2| *065| 36 
13000 S 24°7| °133| 67 % So II°5| °072| 36 
12000 E 24'0| *129| 59 as) 5. 14'0| *082] 36 
11000 E 28'0| *153| 52 5 i 14°0| *082] 34 
10000 ‘y 33°0| 188] 52 Es " 15'2| *086| 28 
g000 a B6>x |OC2Ese 53 5 : 22°0| *118] 35 
8000 A 39°0| °238) 57 a 34°5| ‘199| 55 
7000 R 39°'2| °239| 64 3 37°2| °222| 6% 
6000 g 40°8| °255| 59 = Fiawnath’ Ao hin BRS 61 
5000 ey A. 42'2| °269| 59 B finclouds) 43:2] *279| 62 
4000 act 45°8| °308| 70 46°2!|) sg Egi) 77 
3000 see eee peg vie see 49°0| °348] 74 
2000 ais opr ee es 4 515] °385] 71 
i) * . 
1000 S@ | 54°0) 418) 69 
° = Eg 57°0| 465] 66 
August 18.—The temperature of the dew-point dohreasba from 57° on the 
ground to 521° at 1000 feet, increased from 523° at 1000 feet to 534° at 
1700 feet whilst passing through mist, decreased to 50° at 2000 feet, and varied 
but little till 3800 feet was passed; the degree of humidity varying from 
62 on the ground to 96 at 3800 feet when in a cumulus cloud. The dew- 
point decreased rather quickly to 41° at 5000 feet, and with less rapidity to 
26° at 11,000 feet, the humidity varying from 96 at 3800 feet to 59 at 
11,000 feet. Whilst almost stationary in elevation for some time, at the 
highest point the temperature of the air increased, whilst that of the dew- 
point decreased, so that the degree of humidity changed from 59 to51. The 
balloon then descended: the temperature of the dew-point increased gradually 
to 31° at 8200 feet, and to 38° at 7800 feet: the humidity was 61 at the 
lower elevation; the dew-point remained nearly at the temperature of 37° 
from 7800 feet to 6000 feet, and rose to 48° at 3500 feet—its lowest 
1862, 21 
