ied

PNT RODE TION.

3 been thrown on the-aétion and effe&s of the manures at present employed, but the uses of other substances, and methods of combining and preparing them, have been discovered; from which there are just grounds to believe a valuable addition will accrue to the present stock of Agricultural Knowledge.

It will appear that the saline, and other substances ca- pable of being applied to promote vegetation, are very nu- merous; by far the greater part of them have escaped the notice of those who have made Agriculture their study, nor have any attempts even been made to explain on chemical principles the operation of the manures and substances now in use. Had such researches been prose- cuted to effedt, they would have led to the discovery and application of other substances capable of being em-

ployed, with equal, or perhaps superior advantages.

The promoting of Agriculture is not solely to be con- sidered as creating a more plentiful supply of food, but it is to be regarded as morally and politically conducing to the true happiness of man, by giving to him the occu-

A2 pation