Fixed Alkalies. -r-T)eJlruSihn of InfeSls^ % 85 



conjefturg by the account given by Peritfo!, and an old 

 chart of the Indian ocean preferved in the Britifh Mufeam. 

 However defeftiv'c this chart may appear, he is of opinion 

 that it niav furni(h information of great utility in regard to 

 the difcovciies that remain to be made in that part of the 

 globe. 



C. Veron Forbonnais has given an analyfis of the principle^ 

 of the circulation of provifions, ajid of the influence which 

 fpecie has on that circulation. 



C. Bouchaud, in hiftorical refearches rcfpeftiqg the ediSs 

 of the Roman provincial magiftrates, has pcglefted nothing 

 that could be fuggetted to hini by a fubjcA which belongs to 

 the fcience of hiftory as well 33 to that of iegiflation. Each 

 province had its own government and lawg, and the Roman 

 republic, after having acquired an immenfe extent by its 

 conquefts, was never able to form the wife dcfign of attain- 

 ing to unity. 



CONSTITUENT PRINCIPLES OF FIXED AT-KALIHSi, 



Guyton-Morveap,on the 26th of April, read, in the French 

 National Inftltule, a memoir on the condituent parts of fixed 

 jjlkalies. He made his experiments with Peformcs, pupil of 

 the Polytechnic School. Their conclufion was, jft. That 

 potafti is compofed of lime and hydrogen : 2d, That foda is 

 compofed of magnefia and hydrogen. From other experi-r 

 ments they conclude, 3d, That lime is compofed of carbon, 

 azot, and hydrogen : 4th, That magnefia is compofed of 

 lime and azpt ; and, confequently, of carbon, hydrogen, and 

 ^zot. 



1>'EW JifETHOD OF DESTROyiNG INSECTS. 



Crell has latfely publiflied, ip his Chemical Annals, th^ 

 followinfi' recipe for deitroying earth-fleas, bugs, ants, &c. 

 difcovcred by C. Catin : — Take black foap, of the befl; kind, 

 one pound three quarters, the fame quantity of flowers of 

 fulphur, muflirooms two pounds, and lixty meafures of river 

 or rain-water. Divide the water into two parts, one of which 

 piuft be j)ourcd into a veflel deftined for that purpofe ; fufl^er 



the 



