vi PREFACE. 



the Royal Stciety at London; who has published 

 a Book, intituled, A Treatife of Tillage on the 

 Principles of Mr. Tull. . The ingenious Author 

 has indeed altered the Method obferved by Mr. 

 Tull in his Rook; yet has very exactly given his 

 Principles and Rules : But as he had only feen 

 the Firft Edition of the Horfe-hoeing Hujbandry, 

 fo he is very defective in his Defcriptions of the 

 Ploughs and Drills, which. in that were very 

 imperfect, and were afterwards amended by Mr. 

 Tull in his Additions to that Eflay. 



One of our principal Reafons for taking No- 

 tice of this Book is, to mew the Comparifon this 

 Author has made between the Old Method of 

 Hulbandry' and the New. By his Calculation 

 the Profits arifing from the New, are confider-r 

 ably more than double thofe of the Old. For, 

 according to him, the Profits of Twenty Acres 

 of Land foi Ten Years, amount, at iod. ~ per 

 Livre, 



/. S. a 



"By the Old Method, to 3000 I ivres, or 131 5 °%st T 

 ~By the New Method, to 7650 Livres, or 3 34 1 3 9 y : r lng * 



which makes a prodigious Difference in favour 

 of the latter. As this Computation was made 

 by one who cannot be fuppofed to have any 

 Prejudice in favour of Mr. TulVz Scheme, it 

 will naturally find more Credit with the Public 

 than any Comparifon made by Mr. Tull hirn- 

 \ or by fuch as may have an Attachment to 

 hid Principles. 



It 



