A9A. REPORT—1862, 
be abandoned. In some eases, with a clear sky, the decline of 1° 
has taken place within 100 feet of the earth, and for a like decrease 
of temperature it is necessary to pass through more than 1000 feet 
at heights exceeding 5 miles. 
The determination of the decrease of temperature with elevation, 
and its law, is most important, and the balloon is the only means 
by which this element can be determined ; very many more experi- 
ments are, however, necessary. 
2. That the humidity of the air decreases with height in a wonder- 
fully decreasing ratio, till at heights exceeding five miles the amount 
of aqueous vapour in the atmosphere is very small indeed. 
. That an aneroid barometer read correctly to the first place, and 
probably to the second place of decimals, to a pressure as low as 
7 inches. 
. That dry- and wet-bulb thermometers can be used effectively up to 
any heights on the earth’s surface where man can be located. 
. That the balloon affords a means of solving with advantage many 
delicate questions in physics; and, 
6. That the observations can be made with tolerable safety to the 
observer ; and therefore that the balloon may be used as a philoso- 
phical agent in many investigations. 
SX) 
oO 
List of Stations where Meteorological Observations were made on the days 
of the several Balloon Ascents. 
Height 
Names of Stations. Latitude. Longitude. above Observer. 
Sea-level. 
ah ioe feet. 
Greenwichiviisy*uusvide ae 51 28N. | 0 0 158 | The Astronomer Royal. 
pWrottesley ss 5a-casst > 52 37 218 531 | Lord Wrottesley. 
Wolverhampton .........| 52 37 2 13 | 490 
Belvoir Castle ............ | 52 54 © 39 Ww. | 260 | W. Ingram, Esq. 
Grantham .................. | §2 54 © 39 | x81 J. W. Jeans, Esq. 
Nottingham ...,,.......... Ralcgyt. Lets, ot 174. | E. J. Lewe. 
EPAWENOEN 4m ce < 005s c0 seeps SLE 3: 2 260 | Dr. Moffat. 
DISBEBO GLY «a ge cca open devs 53 25 2150 37. ‘| J. Hartnup, Esq. 
Wakefeld 22:7. 005.0. fv. | 53 40 I 30 115_ | W.R. Milner, Esq. 
ee a ee 
