BY THE USE OF KITES OFF THE WEST COAST OF SCOTLAND, 1902. 
135 
When the winds became veiy strong, for the reasons already given, only one kite 
was used and the height was limited in consequence, and if the winds were only 
' light a great length of wire could not be supported. 
' The Fort William barometer curve shows that the pressure was as low as 
29-5 inches on three occasions only during the two months, and exceeded 30 inches 
I 
I 
July I90£. August 1902. 
on eight occasions. There were five well-marked miniimi., viz., on Jvdy 9-10, 
July 26-27, August 2, August 18, with a secondary minimum on the 20th, and 
August 22-24 ; otherwise the variations were inconspicuous. 
Turning now to the table of temperature gradients, it will be seen that in July the 
average fall of temperature for the first 500 metres, computed from 22 ascents, is 3°; 
for 500-1000 metres (16 ascents) 2°'8 ; for 1000-1500 metres (9 ascents) 2°'2; 
1500-2000 metres (2 ascents) 2°‘0 ; and for 2000-2500 metres from a single ascent 
2'’'0. In August the corresponding figures are 2°'6 (13 ascents), 2°‘8 (11 ascents), 
2°-3 (9 ascents), 2°-l (7 ascents), 2°-0 (3 ascents). In that month also higher stages 
were reached, 2500-3000 metres on two occasions, with a fall of temperature of 2°’0, 
