46 L. HARGRAVE. 
way, this necessitated hauling down E and C, and toggling on D 
in place of C. Two gentlemen assisted and it was safely accom 
plished. A, B, D and E were now flying, E being about six feet 
from the ground, the lot pulling one hundred and eighty pounds 
E was secured by a guntackle purchase to the spring balance and 
the spring balance to two sacks of sand. 
The sling seat was toggled on and the writer got aboard with ® 
hand anemometer and a clinometer. James Swain, the assistant, 
slacked away the tackle fall to the end. The apparatus was then 
forty-two feet to leeward of the sand bags and veering with the 
wind round an arc of 40°.. This was unexpected, as the wind bs: 
well to the eastward of S.S.E., and the coast trends N NE. and 
§.S.W. At this stage there were only a few pounds weight u» : ’ 
supported by the kites. The velocity of the wind was 14-7 miles | 
per hour. The pull on the spring balance one hundred and twenty q 
pounds, and the slope of E with the horizon was 15°. | 
In about a quarter of an hour the wind freshened and raised 
the experimenter, when he found the velocity of the wind to be L 
18-6 miles per hour, the spring balance reading one huner® — 
and eighty pounds maximum. The wind falling lighter, kit® 
and experimenter came down. Several more ascents were q 
but not of sufficient duration to read the anemometer, which a 
& two minutes and glass. However, a long and strong pu 
eventually came and sent everything up like a shot. A careful 4 
reading showed the wind velocity to be twenty-one miles pe 
hour, with two hundred and forty pounds maximum pull o@ oe : 
spring balance, the total weight aloft being two hundred and 
eight pounds five ounces. The angle at which A, B and D we” — 
flying above was measured from E to be about 60°, and also te z 
height from the sling seat to the ground, sixteen feet. The upP™ 
kites and E were sloped to the horizon at about the same angles 7 
so that the forward ends of the cells were open to view from Es J 
ees 
On coming to the ground, the -writer, whilst still on the sling 
seat, was just able by the aid of the guntackle purchase to bal — 
himself and the kites to the moorings. ‘The descent in every © 
