1793' 0" e ducat to ft. 117 



It appears surprising that an art so necefsary for 

 the well being of mankind ia all ages, fhould have 

 been till of late, so totally overlooked in almost eve- 

 ry system of education. Its advances have been slow 

 in proportion to the neglect into which it has fal- 

 len, as an object of scientific inquiry. Since expe- 

 riments have been made the test of truth, few facts 

 have been thorcugly ascertained with regard to a- 

 griculture, because so much time is required for 

 making one experiment, and so much care and nice- 

 ty in the conducting them, that as these experiments 

 usually come to be made by men wlio are not ac- 

 customed to the niceties of philosophic investiga- 

 tion, wrong conclusions are hastily drawn fram ill 

 ascertained facts. To point out the attentions that 

 are necefsary in making experiments ; to select with 

 care the few facts that have been thoroughly ascer- 

 tained, from those which are only grounded on 

 conjecture ; to specify such decisive experiments 

 as are necefsary for elucidating doubtful points : and 

 to inspire into the minds of those who meant to 

 enter on such investigations, that cautious diffidence 

 which the person who is in quest of important facts 

 (hould ever bear in mind, would form the principal 

 businefs of this course. 



Architecture. 

 Considered as an useful art, depending on mathe- 

 matical and chemical principles, rather than as a.Ji;ie 

 art. 



In modern times, so much attention has been be- 

 ctowed upon architecture, as an ornamental art, that 

 the mathematical principles upon which it is four.ded, 



