ON FIVE BALLOON ASCENTS IN 1863. A437 
Balloon Ascent, from the Crystal Palace, March 31, 1863. 
mometers (free). Negretti Dry and Wet Thermometers (aspirated). Hygrometers. | 
and 
pork Daniell’s. | Regnault’s. 
Diff, | Dew-point | phermo- Dry. Wet. Diff. | Dew-point. 
meter. Dew-point. | Dew-point. 
° ° ° ° ° ° ° ° ° 
seoee . eee ee I1'2 
30 —14°2 
30 —15°%3 I2°I 
4°5 —29°0 IIo 
4°5 —32°6 TO | 
35 | —287 | 45 
| 
2°5 —20°6 bie) 
21 —16°8 
40 439 0°5 
470 moto 
less than 
5:0 | —35"4 o'o ras ccarcalRtectreh aseves seegee —I0°0 
Bieta, hh <oocess aur 
2°0 — 64 
ap: | — 63 8°5 
42 iis A) 
a9 | — 35% 82 
4°0 —26'0 j 
: 4°0 —26'0 less than 
f 2°9 = 17'4 Otek} | ceaeks dence =|) eecnse Wt eecans —10°0 
S| at | —28-7 
(| oat | —287 
41 —28°7 
cork’ ain eee Cont (3-5) | (—6:0) 
8 9. 10 11, 12. 13, 14 15 16 
5 (13) Mouth of Thames visible ; coast clear to Yarmouth, 
_ (14) Mr. Coxwell’s pulsations 98, mine 97 per minute. 
(15) Smoke from chimney up to us going N.E. 
(16) The river Thames visible almost from its source to the sea; and the adjacent country 
_ quite clear. 
____ (17) It is a curious sight to see the little spiral lines of steam from trains on Tilbury 
_ line, Romford, and Chelmsford ; between Barking and Romford. 
' (18) Smoke up and almost level with us. (19) Dropped pencil over the car. 
(20) Regnatlt’s Hygrometer does not act. (21) In a westerly current. 
(22) No spectrum. (23) Chelmsford in sight. (24) East coast clear ; Ipswich in sight. 
(25) Very cold (tried vibrations of magnet, but failed). 
(26) Could not get magnet to vibrate. a 
(27) Lowered grapnel ; doubtless the large mass of iron not very distant from the magnet 
had exercised a good deal of influence over it. 
