4000 METRES 
3 
2 
DEDUCED 
METRES 
DPOREES CONTIG 
) METRE 
300 
ANNUAL. VARIATION OF TE 
I3000 METRES 
9000 METRE: 
BOCO METRES 
7000 METRES 
GOCO METRES 
5000 METRES 
4000 METRES 
1000 METRE 
{Q000 METRES -5/ 
11000 METRES 
trating the Report on the Present State of our Knowledge of the Upper Atin¢ 
PRESENT STATE OF OUR ENC 
vertically isothermal, but the 
‘be the same for all. Over tl 
He finds that the value of H 
height of the * home 
temperatures. If the increa: 
H, is about 2 km. 
IV. (d) Annw 
A question of some intere 
temperature at difforent hei 
the manned balloo cents 
no diminution up to 5 
‘a tendency to decrease, the 
definite conclusions. He giv 
as the difference between the 
,an 
Range 
D) | No. of Cases 
‘Toisserenc de Bort * dedu: 
in 1898-1900 that the rang 
Taking as the range the di 
monthly mean temperatures 
Height 
Range 
The following table give 
ionthly mean temperatures 
Column M gives the number 
were obtained, ‘The value: 
of the mean temperatures : 
stations — 
Annual 
Height | Berlin’ | stenned 
EE — Balloons 
M 
Surfaco 2 
1 km. 16 
al ul 
” 15 
WW 
Pitsartiett 
\ Wissensohafttiche Luftfah 
