194 -'^ TREATISE ON THE CONNECTION OF 



to be raised, the most judicious method of proceed- 

 ing would be still to conduct the v/ater to the lowest 

 level, and which will be found to he nearest to the sea,, 

 and then by a sufficient number of windmills, or other 

 engines, to lift it over the great sea bank. Some well 

 Gonstrudted fire engines would at certain times be of ma- 

 terial service to the drainage. 



Fire engines employed in the accomplishment of a 

 great and national objedl, should be exempted from duty 

 on the coal required to work them. The expence of 

 fuel might still farther be diminished, by making use of 

 the refuse small coal made at Newcastle in working the 

 larger and more valuable sorts. This refuse coal may 

 there be had at two shillings and three-pence per London 

 chaldron of thirty-six Winchester bushels, and of which,, 

 about 100,000 such chaldrons are annually brought 

 from the pits for the purpose of clearing the under- 

 ground workings, and are allowed to decay, and perish on 

 bank. Were this quantity of i-ejme coal allowed to be 

 applied, duty free, to such like, or to other important 

 national objedls, many beneficial cons.equenccs would 

 thence arise ; the public revenue could not sufler by ex- 

 empting. 



