1921.] The Eighth Indian Science Congress. evi 
of kite and recorder on the ground. Fig. 9! contains the record 
from a kite which is circling, and shows the motion clearly 
on both the pressure curve, giving height, and the temperature 
curve of the instrument. The largest circle shown is one of 
a mile in diameter, and in it the ground was evidently very 
nearly touched. 
he arrangement of a recording instrument suspended in- 
side the kite. convenient as it is, suffers from the disadvantage 
Fig. 10. 
that since it may take some hours to coax the kite up to its 
highest point, and considerable time to pull it down by its 
engine, the records obtained from the instrument do not really 
represent simultaneous measurements throughout the air from 
the ground level upwards: the part of the record which applies 
to the air near the ground may in fact have been obtained 
on the ascent some two hours before that of the highest point 
reached, and this again an hour or more before the succeeding 
record in the lower layers during the process of winding in. 
! Fig, 9 and several subsequent figures are omitted in this publication. 
