170 
Hydrostatic Engine . 
easy to be done. But I am not a good machinist, and have no pre- 
tensions to decide. Of this I am persuaded, that if a poor man in 
a cellar in Front street, could rent a stream from one of the hydrants 
sufficient to turn fifty spindles, or a single loom on Mr. Siddal’s 
construction, he would enable one of his children to earn more 
wages than he could himself in any usual way of manual labour. 
It is true, no fall is gained from the Schuylkill to the Delaware, 
but there are always machines that do actually raise the water for 
the purpose of renting it out in portions. And every inhabitant of 
Philadelphia, feels that such an establishment is a great public 
convenience. A man might afford to pay a high rent for the hun- 
dredth or five-hundredth part of the power of a twenty -horse en- 
gine, who could not afford to erect such an engine himself, I state 
this, merely as one of the cases that may be put, wherein small 
streams falling from a considerable height, might be advantage- 
ously employed ; certainly not meaning or expecting that every 
or any house in Front or Water Street should be so occupied: I 
give it merely in illustration of the purposes to which the princi- 
ple can be applied. No body, I presume, will deny that a small 
stream falling from a great height (that is with a great head) may 
far exceed in power a much larger stream that is shallow* Sup- 
posing the water could be, as it can be, conveyed from Schuylkill 
by steam engines, so as to supply a great number of small manii- 
facturies conveniently situated with power enough to drive a few 
spindles or a loom or two, would not the erection of such engines 
ultimately pay a good rent to the proprietors, and greatly benefit 
small manufactories, and the public of course ? T. C. 
MR. DUCKET’S PLOUGH. (Plate.) 
IN England, where agriculture is certainly better understood 
than in any other country in Europe ; the land yields on the aver- 
age of the Kingdom, 24 bushels of wheat per statute acre. This 
is managed by keeping it in heart either by 
1st. Manure; every farmer in England making his dung and 
compost heap the first object of his attention. 
2dly» By rotation of crops ; in such a way that two grain crops 
never succeed each other ; but are separated by a grass crop, or 
