1 90 Medicine. — Chemisli'y. 



has been eaten fresh, so prepared, six weeks or two months, 

 after saihng from England ; the beef must be in fine order, 

 and when taken out for dressing (it roasts best) it should 

 be wiped and scraped clean, and put down to the fire as 

 quick as possible. 



MEDICINE. 



Dr. Keutsch, an able physician, who practises in the 

 Danish West Indian islands St, Croix and St. Thomas, has 

 established a new method, which has hitherto proved suc- 

 cessful, in the treatment of the fevers peculiar to these 

 islands, and which arc fatal to the Europeans. He employs 

 friction with oil. The first idea of this process was sug- 

 gested to him by the theory of Scheele, of Copenhagen, in 

 regard to the use of oil in the plague ; a theory which has 

 been published in Baldwin's Recollections respecting Egypt. 

 Of eight soldiers under the care of Dr. Keutsch, six were 

 cured of the fever in the course of twenty-four hours by 

 means of such friction. It produced strong perspiration, 

 and checked the vomiting. The doctor in siome cases ren- 

 dered the eftect of the friction more efficacious by adding 

 camphor to the oil. This discovery is no doubt valuable : 

 the fever cured by this process is the same as that \\ hioli 

 occasioned so much ravage at St. Domingo. 



CHEMISTRV. 



It appears by the following letter from C. F. Bucholz to 

 the editors of the Neues Allgemeiiies Journal dcr Cliimli'y 

 dated Erfurt, October 11, 1803, that there is no such simple 

 earth as that called agust earth: — "The agust earth dis- 

 covered some years ago by professor Tromsdorft'*, and at- 

 terwards confirmed by the experiments of Richter to be a 

 peculiar kind of earth, no longer exists. About a fortnight 

 ao-o I procured some of this earth for the purpose of sub- 

 jecting it to examination, and had proceeded so far that it 

 was ready for being washed and dried ; when, in consequence 

 of a lariie quantity of lime which in presence of my friend 

 Haberle I precipitated by pure carbonate of potash from the 

 muriatic fluid from which this earth, several times treated 

 with ammonia, had been precipitated, I began to doubt of 

 the simplicity of the agust earth. My friend TromsdorfF, 

 to whom I comnumicated my experiments, now informs 

 me that he has found that the agust earth is not simple ; 

 he considers it as a combination of lime and an acid, pro- 

 bably the phosphoric. As he had too small a quantity of 



• Pliilosophical Magazine, vol. vi. p. 2?;. 



asrust 



