84 Letters from Egypt. 



pOration fliould be carried on till the folution becorvK 

 thick as a ftrong fyrup, and upon cooling the whole will be- 

 come cryftallifed : it rnuft then be powdered, put up in dry 

 bottles, well corked, and covered with bladder or cement, to 

 prevent liquefaction j which otherwife would foon take place, 

 owing to the great affinity the muriat has for moifture. 



The powerful effects produced by the frigorific mixture of 

 muriat of lime and mow prefents a wide field for experiments 

 to determine the poflibility of fixing fome 'of the gafes by in- 

 tenfe cold. As foon as an opportunity offers, we mean to 

 attempt fome experiments with that view, of the fuccefs of 

 which the carlieft account mall be lent to the Philofophicaf 

 Magazine, for the information of thofe who arc fond of 

 fuch purfuits. 



XIV. Letters from fome of the Men of Science etlgdgeS 

 in the French Expedition to Egypt. 



[Continued f.om Vol. IE page 41 7..] 



LETTER III. 



I 



Cairo, Thermidor a 6th. 



CONFORM to the manners of the Turks. We a» 

 wear whifkers, becaule a bare chin is a fign of flavery ; and*, 

 though we are here mailers, the force of prejudice makes 

 the Turks believe that thofe Frenchmen who appear with- 

 out whifkers are the ilaves of the reft. 



I have juft come from the Inftitute of Cairo. Two pa- 

 laces of the beys, and two other houfes, which belonged to 

 rich individuals, all contiguous, ferve to lodge the men of 

 letters and artifts. Thefe houfes afford us, perhaps, more 

 convenience than is found at the Louvre, and, at leaft, as 

 much magnificence. An immenie garden, the fuperficial 

 content of which is equal to thirty-five French acres, well 

 planted, and having a number of raifed terraces, which the 



3 waters 



