BY THE USE OE KITES OFF THE WEST COAST OF SCOTLAND, 1902. 
137 
Comparison with Previous Results. 
In order to compare the general results obtained from the experiments with more 
or less corresponding results obtained elsewhere, the following table has been compiled 
from data quoted in Hann’s ‘ Meteorologie,’ and the references in the first column 
are to the pages of that work.* 
Table B.—Table of Average Temperature Gradients, in Degrees Centigrade, for 
100 Metres, for Vertical Columns of Different Heights. 
Height of column in 
metres .... 
} 
.500. 
Berlin balloon ascents 1 
(p. 157) . ] 
Kite ascents, U.S. "I 
Weather Bureau > 
(p. 124) . ... ] 
1000 . 
1-10 
•50 
•80 
Average gradient for 1 
mountains (p. 128) J| 
Average gradient for"! | 
Ben Nevis - Fort I i 
William, July and 
August (p. 131) . J j 
Adiabatic gradient') 
for saturated air I 
(p. 756). Initial j 
temperature, 12° C.J 
•52 
•54 i — 
Average results for") 
Crinan experiments, I 
July and August, [ 
1902 . J 
'56 
•56 
1 
! 
1.500. 
2000. 
2500. 
3000. 
3500. 
4000. 
— 
•50 
’ — 
•51 
— 
•52 
•71 
1 
•68 
— 
— 
— 
1 
metres ap' 
1 
proximat 
ely equal 
to 1° F. fo 
r 300 feet 
of height 
[1340] 
metre. 
1 -70 
}- 
— 
— 
— 
— 
1 
i 
•53 
— 
•62 
— 
•70 
j 
•52 
1 
j 
•50 
-48 
1 
•46 
•43 
i 
— 
The average results of the Crinan experiments, for the whole series of ascents, are 
given in the last line of the table. Up to 2000 metres they agree closely with the 
adiabatic gradient in saturated air for the initial temperature of 12 C., exceeding 
that gradient somewhat for the lower strata, for which the results agree with the 
average temperature gradient of ‘56° C. for 100 metres (or 1" F. for 300 feet), which 
is derived from observations at high level stations, and which is in general use in this 
* The results of the Crinan experiments must be regarded as being more or less preliminary, and in the 
present paper we have thought it desirable to deal only with the general features of the results. 
T 
VOL. COIL-A. 
