18 REPORT—1904. 
changes of temperature by direct multiplication with the aid of a single 
lever. 
The humidity is given by the expansion and contraction of a bundle 
of hairs in the usual way. This apparatus was described by Mr. Dines 
for ‘Symons’s Meteorological Magazine’ for July. One of its advantages 
for kite work is the stability of the pen levers due to the more powerful 
controlling forces. Another important advantage is that the apparatus 
is comparatively cheap. It is made by Mr. Hicks, of Hatton Garden. 
Ascents in connection with the International Aéronautical Investigation. 
From the beginning of February till June ascents were made at 
Oxshott on every day specified by the President of the International 
Aéronautical Committee unless the wind was too light for work with 
kites. 
Ascents from H.M.S. ‘ Seahorse.’ 
As reported last year, an application made by the Royal Society to the 
Admiralty for the loan of a vessel for experiments with kites became 
inoperative in consequence of the accident to the ship which their lord- 
ships intended to place at the disposal of the Committee for the purpose. 
At the desire of the Royal Meteorological Society the Royal Society renewed 
the application for the loan of a vessel with a view to experiments in the 
summer, and their lordships assigned H.M.S. ‘ Seahorse,’ a special service 
vessel of 600 tons and 1,000 horse-power, for the service, under the 
command of Staff-Captain F. W. A. Crooke, R.N., for six weeks from 
the middle of June. Mr. Dines visited Portsmouth to make preliminary 
arrangements, and the ‘Seahorse’ arrived at Crinan on June 16. The 
fitting of the winding engine was completed on June 18, and the opera- 
tions commenced on Monday, June 20, and were continued daily until 
July 28, with the exception of Sundays and the three days, July 9, 11, 
and 12, when the vessel was at Oban for the purpose of coaling. The 
approximate heights of the several ascents were as follows :— 
Date | Height reached Date Height reached 
Feet Feet 
June 20 3,250 July 8 5,000 
remit 4,000 wee 8,500 
see 5,340 5 4 1,760 
022 3,320 Heels 8,060 
es 4,100 16 6,050 
3 2D 3,750 ? { 6,760? 
a Bil 2,300 45 NU 1,200 
» 28 7,300 eats) 4,200 
» 29 4,900 sue 20 2,680 
oO. 5,600 sy 5,500 
July 1 5,500 pe PD) 5,900 
DS 4,400 jf 2a" = 
rd. 6,300 » 25 5,310 
PD) 7,200 Aye Ais 5,280 
” 6 5,300 39 27 a = - 
Pueett 7,350 2s 8,000 
1 Afternoon. 
2 No ascent owing to want of wind. Persistently calm weather prevailed on 
and after July 18. 
