fjS ^eiv Puhlicai'io^is: 



of appendix are employed in illuftraling fome things which 

 had efcaped the author's previous attention, in dating fome 

 theories which he does not yet prefume to rank as fcience, 

 and in contefting fome of the dotlrincs of Count Rumford 

 and others. 



This work has been favourably recei\'ed by the public. 

 Nor can we deny that the arrangement is convenient; that 

 all the known principles and fafts of chemical fcience are ni 

 this book clearly ftated ; that the author has fuggefted many 

 new things lub'tcb the d'ljcoveries of the ahlejl foreign chemifis 

 are daily confirming; nor, that this book will be found, per- 

 haps, more eafily intelligible by the mere novice in chemif- 

 trv, than any other compendium of the elements of this fci- 

 ence with which we are acquainted. 



The following are fome of the leading new principle^ con- 

 tained in it : 



That lime is oxvgen in a concrete form, and that the fixed 

 alkalies are peculiar modifications of the fame fubliince : 



That, contrary to the aflumptions of Count Rumford, 

 caloric is a condenfible or clallic fubftance ; and that, when 

 fire 13 elicited by friction, there is an expanfion of condenfed 

 paloric into a ftate of extraordinary tenuity : 



That, when it has been faid that water is a non-conduclor 

 of caloric, there has been an error^ arifing from the miftake 

 of a mechanical for a chemical effcd, and from the ufe of 

 indiftindly expre(Tive terms : 



That, in every function of organic bodies, the vital energy 

 and the mechanical aft'.on of the organs are accompanied 

 with certain chemical changes ; and that the ftudy of thefe 

 chemical changes can alone guide us to the knowledge of a 

 true thcorv and a rational pra6tice of medicine : 



That the eleAric fluid \s, demonftratively, a compound of 

 caloric and light : 



That, in a true fyftem of geolog}-, the origin of the earth is 

 to be traced from the homogeneous expanfioii of all other 

 matter in caloric;, See. Sec. 



INTEL- 



