L 27 ] 



Extracts from Lord Dundonald's " Treatise on the con- 

 nection of Agriculture -with Chemistry. Page 150." 



The simple earths, air, water, saline l^odies, vegetable 

 substances, &c. &c. having thus been considered, as 

 far as the properties of each relate to the present design, 

 it is no^v become necessar}', previously to any further 

 discussion respecting the practical part, to give such 

 directions to the cultivators of the soil, as may enable 

 them to ascertain the nature and proportions which the 

 component parts of it bear to each other; and conse- 

 quently the value of the surface mould contained in the 

 different parts of their farms or estates; and how, by 

 this information, they may be enabled to apply with 

 most advantage the several ameliorating substances 

 herein recommended. 



It has not been, nor would it be possible to avoid 

 making use of chemical terms, consistently with the 

 plan of a work, which has for its object the making 

 every farmer, to a certain extent, a chemist, so that he 

 may be enabled to understand the nature and proper- 

 ties of the several substances, in the management of 

 which he is daily engaged; and that in all his future 

 attempts to improve the soil, the success of his opera- 

 tions may no longer depend on guess-work, or on 

 chance, but be regulated by a proper knowledge of the 

 materials he may have to work v/ith — how each may 

 best be applied or acted upon, and what effects will 

 ensue from their different combinations. 



