jO'5 Injlilute of Cairo. 



one of which is more fufiblethan the other; and it cannot be 

 forged but when both metals are foftened by the aftion of 

 heat, or when they are both cold. C. Lcvafleur pointed out 

 therefore feveral methods of correcting cold fliort iron, 

 whether its defeat arifes from the fteely quality it has re- 

 tained, or from the prefence of phofphorus. The means 

 employed by the author to remedy the too great hardnefs of 

 fteel and fteelified iron, were by fubjefting them to cementa- 

 tion with oxygenated fubftances. 



C. Buonaparte communicated to the Inftitute an account of 

 the number of perfons, inhabitants of Cairo, who had died 

 in the courfe of a hundred days. The number was 1076, 

 comprehending onlv MufTulmaus. 



C. Monge announced, that it appeared from obfervations 

 made lately at Cairo by C. Beauchamp, that the declination 

 of the magnetic needle was i2[ °. 



Frimairc 31. [Decc7nher 12.J 



C. Rcgnier prefented to the Inftitute, from his brother 

 General Regnier, fpccimens of rock detached from a hill 

 called Djebel Nabo. C. Berthollet and Defcoftils were 

 charged to examine the nature of thefe fpecimens. 



C. Frank, phyfician, tranfmitted to the Inftitute a paper 

 refpefting the art of the ophiogenes. The autlior had fre- 

 quent opportunities of obferving, in different parts of Egypt, 

 the confidence and addrefs with which certain inhabitants of 

 that country handled fcrpcnts ; and his remarks on this fub- 

 jeft will ferve "-o illuftrate the accounts given by travellers of 

 the arts employed by thefe people. 



Frima'ire 26. [December 17.] 



C. Fourier prefented to the Inftitute a fecond part of a 

 trt'atife entitled Refearches in regard to Mechanics in general. 



The fecretary read a poetical compofition on the death of 

 a young French foldier, who had been taken by the Arabs 

 foou after the arrival of the army in Egypt. 



C. Rlpaiilt, 



