346 » Genet’s Mémorial. 
Thus goes the machinery, by one man lowering one of these 
levers and opening one of these valves. A sudden irruptios 
of water takes place below; an hydrostat ascends; t 
movement is transferred to the water wheels, assisted by the 
sed of the iron buckets ; the crank is compelled to turn, 
&c. So the hydronaut will be navigated until it is stopped. 
(Vid. p. 65, 66.) 
Firta EXPERIMENT 
‘Or application of the upwards @rostatic ‘forces to eronautics. 
s is the last but most complicated of the inventions 
result for zeronautics from the great alliance of fire and wa- 
ter, or the combustion of gases, to proeure a vacuum, and 
that he has found substitutes, affording the same results, with 
less danger, expense and weight” 
We pass over his analysis af the mechanic organic power, 
by which the birds fly and the fish swim ; perhaps his machine 
will approximate as near to = effects of their curious organi+ 
zation, as human ingenuity can go. B: gives us an elliptic 
hemisphere only of a large ee a plate 5,) that he may 
* the more effectually cause its form to approach to that of a 
Mis Having an area of 54 feet, and being filled with hydro- 
, it will contain a million and twenty-three thousand cu- 
‘ bit feet of that gas, and miipe carry a burden of 37 tons. 
- The cover and netting of the zrostat are fastened to @ 
platform, B, all a and lined with oiled silk, and to this 
23 feet in diameter, that is framed to an upright shaft, the 
upper end of which moves in a box fastened to the platform, 
: and the wer in a socket fixed in the deck. Two horses can 
= upon the wheel, and being yoked to posts standing 
“unconnected upon that wheel, they compel it to revolve for- 
ward by the action of their legs, and the weight of their bodies. 
On the periphery of the wheel, are bevel cogs, E, which 
mesh into a small bevel wheel, KE, 3 feet in diameter ; this 
meshes into another bevel, wheel, G, 6 feet, diameter ; and this 
also into another, H, Which being tla Bi the shaft, I, must 
cause the two Seiceal aerial wheels, J, 20 feetin diameter. to re- 
ee Mae aes times a one minute, with a velocity. of 2160 
t, because 
cting power 
