1801,] Obſervations on Rowen and Sheep Huſbandry. 391

hard ſoider, bedded in white broad cloth,&c. inſtead of water- proof mortar; and the ſame may be ſaid of the blocks è.‘The area of the pipes, if 3 inches diameter, will be about 7 ſquare inches, whence, 1f the chambers D and K are each 1-5th of an inch high, it may be ſufficient, as 2= 1 inches,

N. 8. the pipes ſhou!d be level, or be ſo laid as that all the air therein may eſcape.

In towns, and where water is ſervéd in pipes, a machine of this kind might be placed at every convenient diſtance, and the filtered water might paſs into a well or tank, from whence it might be pumped for uſe; the ſame pump would cleanſe the machine, and drive the ſilt into an adjacent drain or ſewer.

Where water is to be laid on, a diſtin& ſet of pipês might convey the filtered water, and the ſervice cock may be of a ſmall bore to give not more than 100 gallons in 24 hours to each houſe.

The head of water ſhould be about zo inches above the pipe Z. i

The veſſel ſhould be filled with fair water to prove its being water-tight before the medium is placed in it.

The ſtones of the four upper curſes ſhould have lewis holes in them, whereby, with the help of tackle, they may be gently and exaäAly laidin their places.

Strips of woollen cloth may be inſerted in the jun&ures of the ſtones L, to prevent the mortar from getting into the cham-

ber K.

AED É RES 2 c: Be

ADDITIONAL OBSERVATIONS ON ROWEN, AND THEi¿SHEEP HUSBANDRY.

To the Editar of the Commercial and Agricultural Magazine.

SIR» Conſider the Farmers Calendar as ſo valuable a repoſitory of Agricultural knowledge, that it is with peculiar pleaſure I reply tothe author of that work, with whoſe name I was unac- quainted before the publicätion of your laſt number.

I have myſelf experienced the injury complained of from fed- ing of the Rowen heavy cattle in the winter ſeaſon.‘The firſt year È adopted this practice, Having ſent ſome beaſts to Smithfield market ſoon after Chriſtmas, and being diſappointed of the price[ expected, they were Kept ior another month upon preſerved afier-graſs, and though the difference of price Was Very great, 2nd amply repaid tie expence of the herbage, ye- the in- jury which the feld frſtained from the poaching ofthe c.tle was

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