AGRICULTURE WITH CHEMISTRY. 12 



salts. This quantity could not be purchased in England^ 

 inckiding the duty, at an cxpence less than seven shillings, 

 which farmers, situated as before described, may procure 

 at the small expence of carriage. 



Sea water may be raised, where coal is cheap, by means 

 of a fire engine, to such a height as, corresponding with 

 the level of the inland country, would allow the water 

 to be conveyed in small open canals, in wooden or in 

 earthen pipes, to a considerable inland distance; each 

 farmer, or proprietor, receiving as it passes the pecessary 

 supply. 



A fire engine of forty inches cylinder, with ten inch 

 pumps, would raise to the height of 30 fathoms, loco 

 tons of water per day, equal to 6000 tons per week, or 

 300,000 per annum. Admitting this water to contain 

 I in 33 of salt, 9,636 tons would annually be procured ; 

 and supposing each farmer, on an average, to receive such 

 a quantity of sea water as would be equivalent to 33 tons 

 of salt, 9,636 tons would be sufficient to supply 29a 

 farms. Should the interest of the capital employed, and 



the 



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