PREFATORY ADDRESS.

MANY experiments, much labour and thought, 2 desire to be usefully employed, with the leisure afforded bya retired life, proceeding from the res angusti domi, have enabled the Author to present the following Trea-

tise to the Public.

The importance of such a Work, and the peculiar fitness of it at this jun€ture, have induced him of late to dedicate the whole of his time to its compilation and arrangement; accomplished with much personal incon- venience, and to the apparent negle& of some important duties and family concerns, which otherwise would have

claimed his prior regard.

The