CONTENTS. v 



Ajhort Account of Souffriere in the Ifland of St. Lucia. 



From Obfervations on the Dij cafes which appeared in the 



Army thjre in December 1 7 7 8 , &c. By Dr. Ro L L o Page 256 

 Extracl of a Report, on the Means to be ufed for purifying the 



Air in the Apartments of Sick Perjons, made to the Society 



of Medicine at Brujfcls. By J. B. Van Mons - 258 

 Simple and Eafy Me/hod of Cleaning and IV hitening Prints 



or Engravings. By M. Faberroni - 260 



Obfcrvations on the Britijh Trade with Turkey. By W. Eton, 



Efq. - 262 



Obfervations on Naples Yellow, and the different Methods of 



preparing it. By Prof c for Beck mann - 278 



Com'-arifon between the Human Race and that of Swine. By 



I. F. Blumenbach - - 284 



Account or the Me/bod of making Sugar from Beet Roots, 



lately difcovered by M. Achard -r 291 



Defcri tion of an Im i roved Machine for Cutting Chaff, m- 



WKte//»)' .Wr. Robert Salmon - 292 



Fourth Communication from Dr. Thornton, Phyfcian to 



the General Difenfary, relative to Pneumatic Medicine 299 

 Account of the New Machine invented by the late Mr. Cus- 



tance, for making Vegetable Cuttings for the Micro- 



fcope. Communicated by Dr. Thorn t jN - 302 



Remarkable Ivfance of a Turkey Cock hatching Eggs. By 



M. Oedmann - 309 



Method of J c curing Trees from the prejudicial Effecls of Frofi. 



By P. J. B. DI SANMARTINO - 3IO 



Report on the Travels of C. Olivier and C. Bru- 

 guiere, undertaken by order of the French Government, 

 through the Ottoman Empire, Egypt and Pcrjia, during 

 the Years 1792, 93, 94, 95, 96 and 97. By C. Oli- 

 vier - - - 337 



Procefs of making Attar, or Effential Oil of Rofes. By 

 Lieut. Col. Polier - 347 



On Primary Ores of Iron. By Mr. David Mushet, of the 

 Clyde Iron-works - - - 330 



Defcription of the Lac/ha, or Lac Infect. By Mr. W. Rox- 

 burgh, Surgeon on the Madras Ejhiblijbmcnt 367 



Mayow anticipated : or, The Difcoveries o/'floOKE relative 

 to the Compo/ition of our Atmofphere. Communicated by 

 Dr. Thornton - 370 



OnaNeiv Kind of Sympathetic Ink. By M. Meyer 375 



Defcription of M. di: Saussure's Diaphanometer. By Dr. 

 F. YV. Aug. Murhard - - - 377 



Hi/lory of Ajlronomy for the Year 1798. Read in the College 



de France, Nov. 20. By Jerome Lalandk 381 



A 2 Obfervations 



