BOOK VI

211

iMij AAuiiii i,

f ZZmj02jLn7^/72777/ /Z7^

‘' Vw W//>^

Wwm

mi/mmmmm

ir D

I I

I ^51

SE5«i

is«i

wmm,

m

IK^i

WM'n

W *2

mm

A—Machine first described. B—This workman, treading with his feet, is com-pressing THE BELLOWS. C—BELLOWS WITHOUT NOZZLES. D—HOLE BY WHICH HEAVYVAPOURS OR BLASTS ARE BLOWN OUT. E —CONDUITS. F —TUNNEL. G —SECONDMACHINE DESCRIBED. H —WOODEN WHEEL. I —ITS STEPS. K —BARS. L —HOLE INSAME WHEEL. M—POLE. N—THIRD MACHINE DESCRIBED. O—UPRIGHT AXLE.

P —Its toothed drum. Q —Horizontal axle. R —Its drum which is made of rundles.