CONTENTS 



O F T H E 



SEVENTH VOLUME, 



J\.ESE ARCHES refpcBing the Compqfiiion of Bnamel. By 

 C. Clouet, Ajaciate of the French National Infittde 



''age 3 



On a nezu fulmhiating Mercury. Bji Edward Howard, 

 Efq'.F.R.S. - - - 17, 123 



On the Origin and Progrefs of the ManufiSiure of Pig-Irun 

 ivitb Pit-Coal; and Comparifon of the Value and Effe£Js 

 of Pit -Coal, IFood, and Peat -Char. Bj Mr. David 



MUSHET - - _ ' _ _ CJ5 



Advantageous Method of feparating the whole of the tar- 

 tarous Acid from crude Tartar. By M. LowiTz; 

 abridged hy Dr. Van Mons, of Brujjlls - 46 



On the Method of preparing Ether bj the Muriatic Acid, or 

 the Marine E}heroJ- the Shops;. JBy J. B. Van MoNS 48 



Ohfervations upon an unujual hori^zontal P\.efra5tion of the 

 Air ; with Rcmarhs on the Variatio?is to ivhich the to-zuer 

 Parts of the Afmofphcre are fometimes fuhjeci. By ths 

 Rev. S. ViNCE, A.M. F.R.S. a7id Plummn Profejjir of 

 Aflronomy and experimental Philojophy in the Univerjity of 

 Cambridge - - _ _ r^ 



Qafe of Tetanus cured hy Wine. Comviunicaled in a Let'ter 

 to Dr. James Gregorv, Profcjjor of the- Pradice of 

 Phy/ic in the Univcrfty of Edinburgh, by Dr. David 

 Ho SACK, Profefor of Botany and Materia Medica in 

 Colmnbia College - - - - 62 



On the Expanfioji of Water during Congelatioii. Comninni- 

 cated in a Letter from Stephen Dickson^ M.D. to 

 Dr. MiTCHiLL, of New -York _ _ 6g 



The Theory of Explofons. Communicated in a Letter from 

 Mr. Blanciiet to Dr. Mitchill, Profeffor of'Che- 

 miflry. Natural hliftory.^ and Agriculture, in Columbia 

 College, in the Slate of New-York - - 71 



IjCtter from Dr. Van Mons, of Bruffeh., to J. C. Dkla- 

 M ether IE, on the conjlituent Principles of fixed Al- 

 kalies,, ^^c. - _ _ _ 75 

 A Z CurJ^rj 



