468 REPORT—1862. 
Taste VII. (continued.) 
eee ese eR moms Anca piano CS Mi) NS Se 
Hygrometrical results. 
Ascending. Descending. 
Hesn, in feet, 
above the mean 
Tempe- Rh) Tempe- «| Degre 
level of the sea. eee ”) Circum- cane: of aoe “ ra eren Circum- eee of a of : , 
times. |Stances. poy yapour. ae times. | Stances. pence vapour. = 
September 1.| © . + in. a . in. 
4.000 - 8 37°6| +225] 69 || Su alo 37°0| °220| 70 
3ooo «(|E a & 43°2| °279| 76 ||\;Gexl ... 38°7| °235| 69 
2000 | Eg Mn 479| °334| 78 |ip'D 8 47°3| °327| 86 
1000 Gig 50°3| °365| 72 ||BB 
° ead BS 
re ney he 
ga¢ 
4.000 $:/en¢ 
3000 |g g a S22 | 45°38} °308) 75 
2ooo |S ae ja | 460) “311] 74 
roo. [ESO BE a 
o | S/o3s 
September 5. 
2.4000 —36°0} ... 16 
23000 —28:0| awe 21 
22000 —20°5 | ase 32 
21000 —I5'0| «. 33 
20000 — 5°2| eso 50 aa coe 1[—37°O| eee 8 
19000 , [20°] ane 20 ose doe: 7 1—= 351) | Peas 8 
18000 BS |-— £9] o- 41 awe ove |= 33°2)|" lowe 9 
17000 g g |t 80} *062| 76 Sa eos) f= ZIT eee 9 
16000 a * 13°2| °078| 84 mae ose pil 43010) eases 9 
15000 a. 3 16°7| *093} 89 os ry |—28°5 . 10 
14000 » a 19'2| ‘r04| 88 me o | |=26°51\ reve Io 
13000 m 22°5| °120} or ave E 2455 | * ove 10 
12000 g£ 22°0| "118| 81 “ee = |—21°O| ... II 
11000 5 26°0| ‘I4I| 85 Pe ~ |= S'0] oe. 17 
10000 a 26°5| °144| 81 cas s + 3°0/ *050] 27 
g000 _ 27°5| °152] 75 ae a 7°5| *061] 29 
8000 | 29°5| °163) 71 A i] 12°7| *077| 33 
7000 = 35°0| ‘204| 77 “ 3 20°5| *110| 43 
6000 36°2| 214] 98 aE s 21:01) PEs Eeag 
5000 = 38°5| °233] 91 — 5B 21°5| *115| 36 
4000 = 40°8| °255| 86 on mas 22°5| °120) 33 
3000 S 43°2| °279| 81 see aes 38°7| *235] 58 
2000 45°5| °305| 76 eos ene 42°8| °275] 62 
1000 3 49°9| °360| 76 AM s 46:2] +313] 63 
° =a) 56 “eo aa “ie x0 5o'o| °*361| 64 
increasing in dampness in the descent to 10,000 feet ; then a dry stratum of 
air was met with, till on approaching the clouds and passing through them a 
moist stratum was passed; below the clouds there were but slight variations 
till the descent was completed. 
September 1.—The changes of the dew-point in this ascent were more 
frequent and more abrupt than on August 20; there seemed to be different 
layers of moist air, varying in thickness from 200 to 300 and 400 feet up to 
3000 feet, and above this the variations were smaller in amount and less in 
number. In the descent a moist stratum of air was met with between the 
heights of 2000 and 1300 feet. 
September 5.—The temperature of the dew-point increased from 483° on 
leaving the eayth to 503° at 700 feet; it then began to decrease, and was 
