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Article IV. 



RefeSIions on Drill-Machines, particularly 

 fiiggejled by an Account of one invented by 

 Mr. Barnes. 



[By the fame, to the Secretary.] 



SIR, 



T Congratulate the publick on Mr. Barnes's in- 

 ^ vention of a new Drill -Machine. In Art. xliv. 

 of your 4th volume, he fays, " Whenever it (hall 

 « be fully before the publick, I flatter myfclf, it will 

 *' be found to poflefs, at the price of ten guineas, 

 ^^ at lead more than all the valuable properties con- 

 ** tained in other machines of a much higher price." 

 If fo, I will venture to add, it has at leaft twice their 

 merit, as being more compleat, and but little above 

 half their price. 



The benefit accruing to the publick from im- 

 provements in agriculture, by means of new inven- 

 tions to facilitate its operations and reduce its ex- 

 pences, muft ever be in proportion to the extenfivc 

 ufe that is made of them \ and thefe again will ever 

 much depend upon the eafe and moderate expcncc 

 0t which they may be acquired. 



Were 



