ir CONTENTS. 



On the new Infctl jo prejudicial to Apple Trees ; and a Me- 

 tbod of extirpating it Tage 89, 224 



Second Communication from Dr. Thornton, rh-'I'ician to 

 the General Dij'penj'ary, relative to different Trials made 

 with Factitious Airs - - - go 



Biographical Memoirs of James BERNOULLI - gz 



Account oj a remarkable Fierv Eruption from the Earth in 

 Iceland, in the year 1783. i^S.M.HoLM,S.S. TheoL 

 Cand. - - - - - 113 



An Account of Toaldo's Syjlem ref peeling the Probability of a 

 Change of Weather at the different Changes of the Moon 



120 



On the prcfent State of Surgery in Turkey. By W. Eton, 

 Efq. - - - 127 



Observations on the Bodily Conformation and Mental Capa- 

 city of Negroes. By Profeffbr Blumenbach - 141 



Obfervations on the Winter Sleep of Animals and Plants. By 

 ProfeJJor Fab Rl CI US - 156 



Experiments made to afcertain the Compofition of the Swedifb 

 Stone Paper or Artificial Slate. By J. G. Georgi 15& 



On the Jo called Sea Froth and other Subfances of which the 

 Bowls of the Turkifh Pipes are made. By Dr. Reinegg 



A fin gul ar Phenomenon refpeiling Snow,fome of which, oj a 

 red Colour, was found on the Alps. By M. de Sa us- 

 sure - - - - - 168 



Defcription of i.n Apparatus propofed to be applied to M. Klin- 

 GERt's Diving Machine, to enable it to be vjed at greater 

 "Depths than it vtherwife could - 171 



Singular Iftflaaict of the Attachment of Birds of Prey to their 

 Young. By M. Ckonstedt - 176 



Ajhort View of the Mitchilfan Theory of Fever, and of ' Con- 

 tagious Di/ cafes in general - - 177 



Description of a Machine for drawing Bolts in and out of 

 Ships. Invented by Capt. William BOLTON of the 

 Navy - - - - 189 



Defcription and Fife ofC Guyton's Eudiometer - 191 



On the Component Parts of Iron-ftones, and bow thefe in the 

 manufacturing affccl the Quality of Crude Iron. By Mr. 

 David Mushet, of the Clyde Iron Works 193, 239 



A remarkable CaJ'e of internal Pain in the Heel, and an inci- 

 pient Mortif cation, cured by the Inhalation of Fital Air, 

 By Dr. Thornton - - 213 



Observations on Living Animals found inclofcd hi Stones and 

 other /'olid Subjlances. By F. W. A.Mubhard 22$ 



Obfervations on Snow and Rain; their Influence on Vegeta- 

 tion, and their Combination, with Oxygen. By J. H. Has- 

 SENFRATZ - - - 233 . 



7 A ffort 



