PLATES. 



I. Illustrative of Mr. Waldie's Researches on Flame, 



II. and IV. Illustrative of Professor Forbes's Researches on Heat, Third 



Series. 

 III. Illustrative of Mr. Richa&dson's Researches upon the Composition 

 of Coal. 



ERRATA. 



Page 45, Art, 34. line 8, /or directly rend inversely. 

 Page 395, line 11, /or precombined read uncombined; 



