Contents. 



Memarh on Dr. Girtanner's Memoir refpeB'tng; the 

 QuejUon, lubether Azot be a Jlmple or a compound Body, 

 By C. BeRTHOllET _ _ _ 231 



Dcjcnption of an improved apparatus for DiJliUing, hy ivhich 

 a conjiderable Saving may be made in the Article of Fuel ; 

 and of an Apparatus for the Rectif cation of Spirit ofjfinci 

 5)' J. W. C. Fischer - - _ 221; 



On the Prcparatiom of Amber Varnijh, and the Application 

 of it to different Kinds of fained 'iVood. By Nils Ny- 

 STROM, Apothecary of NcrrkKping - - 2"? 



Ohjervations on the Trmfltion of animal or ahforbimr Earth 

 to the State of calcareous Earth. By B, G. Sage, Di- 

 reBor of the firjl School of Mines - -' 2415 



Account of a new, eajy, and more C07wenient Procefs for re- 

 Jolving Minerals by Alkalies. By M. Lo\VlTZ 247 



Difcription of a Machine by which the Strength of Hor/ei 

 may be eviployed to knead Pafe for baking B'read 26 1 



On the Eletlricity excited by the mere Contait of conducing 

 Suhfnnccs of different Kinds. In a Letter from^Mr. Alex- 

 ANDER^VOLTA, F.R.S. Profefor of Natural Phihfcphy 

 m the Uriiverfity of Pavia, to the Right Hon. Sir Jos JiPH 

 Banks, Burt. K.B. P.R.S. - - 289 



Inve/ligationof the Powers of the Prifnatic Colours to Heat 

 and Illuminate Objects ; luith Remarks that prove the dif- 

 Jercnt Refrangihility of Radiant Pleat: to which is added, 

 an Inquiry into the Method of viezaing the Sun advanta- 

 geou/ly, with Telefcopes of large Apertures and high Masr- 

 7iifying Powers. By William IIerschel"^ LL.D. 



_V.R.S. - - _ - - 311 



Experiments in Galvanic Eleclricity, by Me/frs. Nichol- 

 son, Carlisle, Cruickshank, ^F. - 337 



Letter from Hexry Moves, M.D. /oMaxwell Garth- 

 shore, M.D. containing ail Account of fome intertfiin<f 

 Experi?uenti in Galvanic Ehciricity - - o-VJ 



A ProjeB for extending the Breed 'of fine-woolled Spanijh 

 Sheep, now in the Poffejjion of hlisMajejly,' into all Parti 

 of Great Britain where the growth of fine clothing Wool 

 ts found to he prof table - ~ - _ "" oro 



On a periodical P'ariation of the Barotneter, apparently due ta 

 the Infuence of the Sun and Moon oh the Atmofphere. /jy 

 Luke Howard, Ffq. Read before the Ajkcfan Societ'i^ 

 London - - _ _ _ rt'r-i 



Letter fro7n C. Jl. Tatham, Ef-j. ArchiteB, containing'd 

 brief AccomU of the grand antique Bacchanalian Vuf\ )ute 

 in the Poffefion of the Right Hon. Lord Cawdor, now at 

 tf'ohurn Abbey - - _ _ 0(^4 



^ew Publications - - 81, \6<^, 2(^2, 36^ 



inttlligmci a?ui Mifeellniieaus Ariides 8a, 177, 367, \b6 



