CONTENTS. V 



c'qnalifis 5 ivkb InlroditHory Remarks on the acrhnmioits 

 <ind poifonous Quality of Jbme of the Englijh Species of 

 that Genus. By Richard Pultenev, M.D.F.R.S. 

 andL.S. - - - - - 210 



Defcription of the Mus 'Binfar'nts, from n Drazuhtg commu7ii' 

 catcd by Major -General Thomas Davids, F. R. S. & L. S. 

 By George Shaw, M.D.F.R.S. F.P.L.S. 315 



Ok the Analyjis of Azot : an Exlraii of a Letter fnm Dr, 

 GiRTANNKR to Dr. Van Mons of Bruffdls - ai& 

 Defcripttan of the Method employed at Aftracan for making 

 grained Parchment or Shagreen. By Profeffor Pallas 217 

 On that Difeafe peculiar to Poland and fome of the ruigh- 

 botiring Countries, called the Plica Polonica - 224 



On the Ammnniure of Cobalt, and an Acid cojifained in the 

 Grey O.xyd of that Metal knozvn under the Name of 

 Zaffar. By L. Brugnatelli - - 227 



Defcription of Mr. Collier's improved Apparatris for Fil~ 

 tering and Stceetening Waler and other Fluids - 240 

 On the iiarious Remedies that have been recommended for tht 

 Cure of the Hydrophobia - - - 251 



Defcription of the Tjland of Celebes or Macaffar ; ivitb an. 

 Account of its Gold Mines, and the Manner of ivorking 

 thein. By Mr. VoN WuRMB - - 289 



Obfervations on preferving Specimens of PianJs. By Jo H iV 

 Stackhouse, Ef(j. F.L.S. - - 30J 



On the Effids of the Acetic or Acetous Ether, employed with 

 Fri£iion in the Rhewmatifm, Sciatica, and Gout 314 



On the Nature of the Colouring Principle of Lapis Lazuli. 

 By C. GuYTON - - - 31(5 



Account of certain Phenomena ohferved in the Air-Vault of 

 the Furnaces of the Devon Iron-Works; together with fo7ne 

 praSlical Remarks on the Manageiiient of Blatl-Furnaces, 

 By Mr. Roebuck, in a Letter to Sir James Hall, 

 Bart. ----- 324 



Communication from Dr. Blackeurne refpeSling Caloric, 

 Light, and Colours - _ - ^34 



Memoir on Azot, and on the QuejTion, Whether it be a fimple 

 or a compound Body. By Christopher Girtanner, 

 M.D.ofGottingen - _ - 335 



Method of detecting the Prefence of Sulphur and Arjenic vi 

 Ore, and of accurately determining the Quantity. By 

 B. G. Sage, Director of the f if School of Mines 354 

 Dfcription of an Air and a Water- Vault employed to equalize 

 the Difcharge of Air into a Blaf -Furnace. By Mr. Da V I D 

 MUSHET _ - - _ 362 



New Publications - - - 265, 364 



Litellige?ice and Mifecllaneous Articles 84, 1 83, 272, 366 



