ON FIVE BALLOON ASCENTS IN 1863. 495 
Taste VIL. (continued.) 
THIRTEENTH ASCENT. 
Humidity of the Air. 
Ascending. \ Descending. 
Height, in feet, 
josiglershy a Between Tempe- Elastic Degree Between Tempe-| phastic Degree 
iat |Citcum- ACEO free |. | hmm | Citeum REE Of occ af | Oh 
times. | Stances. point, |Y@P°ur. | “gity, || times. stances. point. |Y@P°Ur-| “ity, 
July 21. ‘Out of . in. z in. 
3000 cloud. | 52°5 "398 97 i 52°5| 396] 97 
2800 Ween a 54°0| 418] 100 55:0] °374.| 91 
2600 Sc ae 54°0| “418 100 g mepen| 53°0| “403| 98 
2400 an Ie 54°7| °428]| 100 is 53°0| “403| 96 
2200 el out | 556) eae ® lImeloud) 53°0| -403| 95 
2000 2-1! 55a aoe 53°3| "4°7| 93 
1800 S |etouds;} 546) 427] 93 fs 52°5| °396| 89 
1600 g | clouds| 55°2| 436] 91 B 54°0| “418| 93 
1400 | wy | 562] --453| 93 S 55°1| °434| 96 
7200 a Sasi 570| 465) 93 ie 56°0| *449| 97 
os > \aouds.| 57°} “465| 9° ~ Theballoon th ae 
[efe) SS sya age ok % turned |to ascejnd. 
600 = 580| -482] ot || 
400 E | sky | 59°] ‘5e0) 94 |) B 
200 overcast.| 60°2| 7522) 94 || 
° 60°5| 528] 96 / 
3200 52°8| 400] 99 aam| 5} 374) 85 
3000 Fog. | 52°7| -399] 95 bie ets §2°1| °389| 100 
2800 53°0| °403| 93 sy | SR 2) 39K] , 99 
2600 dq 53°0) 403] 96 3 52°5| 396) 9 
2400 3, 53°6 ire loo || $5 52°9| “401|) 97 
2200 # © 53°9| “4! 99° ee 53°5| “410) 95 
2000 3 - Cloud.| 54:0! -418} 100 a iS Eee 5370] 403] 91 
1800 4inQ 54°9| 431] 100 EE 53°2| 406) 94 
1600 g< 56°0| *449| 100 || SB 54°5| °425| 93 
1400 oa 57°0| °465| 100 || Be 56:0} 449] 96 
1200 ceo Hoga 57° *473,| 100 5 57°6| -475| 98 
1000 58:0| 482] 100 : Rain. 59°5| “5°99] 99 
800 61°8| -552] 100 
600 61°5| °546| I00 
Thebaljloon thjen 
turned |to asce|nd. 
On 
57°] °465) 99 MEL 581) *483) 100 
S7iDi\p ©4739 209° 2S 4nd Neer) SPaeee 500) tOP 
58:2] -485| 100 || 2 Fl gark | 58°6| *492| 100 
59°0| 500] 100 aa g cloud. 59°4| °507| 100 
poe *518| 100 ||, 5 Rain. | 60'0| +518] 100 
ro} °537| 100 liq & 
61°5| °546| 100 S s 
July 21.—Rain was falling heavily on leaving the earth; the degree of 
humidity at first decreased, and then increased and decreased again, till on 
passing into dense fog at 2200 feet the air was saturated. On descending 
to 1400 feet the air was nearly saturated; on rising a second time the air 
Was again saturated, and was nearly so up to 3200 feet ; on the second de- 
scent the humidity varied from 91 to 100, and afterwards the air was quite 
saturated from1800 feet to the earth. Rain had been falling heayily all the 
time the balloon was in the air. 
