PROCESS 



FOR 



BURNING BRICKS, 



yfr//um magijltr vfut* 



COLUMILLA. 



$ i. Circumjlanccs wbieb fuggrfled the following 



Experiments, and the J)s/ign of communicat- 

 ing them. 



J[ HAVE long obferved the mode of making; 

 bricks commonly praftifed, to be in many par- 

 ticulurs injudicious, and fufceptible of great im- 

 provements. The Academy at Upfal, fome 

 years ago, impofed on me u talk which gave 

 mcanoccaiiontbr a ftricter enquiry into this mat- 

 ter. J was enjoined by that body to examine 

 feveral dillerent forts of clay ufed in making 

 bricks in the works under their direction. The 

 experiments which I then inltituted, confirmed 

 my conjectures : And I now communicate them 

 rvith the greater confidence, becuufe this art, 



notwUhltaiidiug 



