used in the East, 225 



A cone four feet liv sixteen inches will contain 1,84 of 

 a cubic foot, or three pailfnls three-tenths. 



We ought to make an abstraction of the loss of water oc- 

 casioned by the fold which the cone contracts in ascending 

 from the bottom of the well, since it is suspended by the 

 two extremities ; this lf)Ss may extend to half a pailful, and 

 we have also neglected the capacity of the truncated portion 

 of this cone. 



The larcest of these buckets cannot be easily managed 

 but by means of a windlass furnished with a hopper wheel ; 

 but the smailedt may be managed by a simple wmdiass with 

 a iiandle. 



The bucket is the most important part of this machine, 

 and it is even in this that the innovation consists; for the 

 rest of the mechanism may be varied ad infinitum, and we 

 may apply the same kind of bucket to all the machines in 

 use for drawinuj water. It will procure in the same space 

 of time, and with the same force, a volume of water much 

 more considerable ; aiul it combines another great advan- 

 tage, that of conveying the water to anv given height by 

 means of one or more machines of this kind. For this 

 purpose, it is only necessary to raisethe reservoir parallel to 

 the level of the greatest height of a sloping piece of ground, 

 and to cause the water to flow from the reservoir into chan- 

 nels formed by hollow trees, or simplv by two planks 

 nailed at right angles, and tarred at the joinings. 



Supposins that we only wish to reach a perpendicular 

 height of twelve feet, we shall elevate the first reservoir on 

 four posts to this height. We mav conceive that by carry- 

 ing the pulley some feet above the reservoir, the bucket 

 will ascend, and will thus be equally well enipticd at this 

 lieight as at the level of the iirouiid, although the mecha- 

 nism necessary is placed below this same reservoir. We shall 

 even find an advantage in this; for the gardener will be pro- 

 tected from the sun, and the four posts may be concealed 

 by treUis work, to which we may apply vines or other creep- 

 ing plants or flowers, which will give the scaffolding the 

 appearance of a harbour. 



Finally, the mechanism just described may be applied to 

 the external wall ol' a house ; and if we form a reservoir on 

 the roof, the water may be conveyed throughout the wltolc 

 of I he apartment!, and serve several ueeful purposes. 



Vol. 40. No. 173. Sept, 1812. P XLI, On 



