17(> ^^ MURIATIC LtllLIi, 



tljer exainiHed, and particAilarly to be compared with tlio-^^* 

 plants, the bituminization of which is not far advau- ed, tQ 



■ see what changes its progress effects in their constitntjoii. 



By hoiling dis- Nitric acid of 40°, with a boding heat, dissolves tn\f. 



solves It. Crj'stallizable oxalic acid is oV)tained from it, and thj yel- 



low bitter matter ; but no detonating product, like that of 

 jet. T know not whether Hatchett's tannim be found in it. 



Incinovated. Its incineration is tolerably slow. Its coal does not emit 



the aramoiiiacal smell of azotlzed charcoals. Its ashes arc* 

 gray, without the least indication of saline matter or lime. 

 Their lixivium does not alter tlie juice of the blue-bottle* 

 Acids do not occasion the slightest eJ^ecvcscence with theiri. 

 They contain a great deal of silex, sulphate of lime, and st 

 little magnesia. 



II. 



Ahslract of a Memoir on Muriatic Ether, read at the Insti- 

 tute February the lyth, 180/, bt/ Mr. Tiienard*. 



Mnnatic ether jtjlFTER having examined why muriatic ether has re- 

 hi herto un- 



kriowa° """ niained hitherto unknown to chemists, though it has been 



repeatedly an object of their research, the author gives the 



A gas at the process for obtaining it. As it is habitually in the state df 



pemluro ^'''^" g^^' ^^^*^ following apparatus must be employed. 



Arrantf<-mcr.t I'^to a retort, capable of containing no more than the mix- 



of the appara- turc in its belly, equal parts by measure of highly concen- 



lus for obuin- ^j.^jg^ muriatic acid and alcohol at 3ij° are to be put, and 



well shaken, to bring all the particles of each into contact. 



This done 7 or 8 grains of sand at most- are to be thrown 



into the retort, to prevent th^ sudden ebullitions that might 



otherwise take place in the course of the process : aftet 



xvhich it is to be supported on the naked fire of a common 



furnace by a grate of iron wire, and a Welter's tube adapted 



to it, terminating in a threeiiecked bottle, the capacity, of 



which is double that of the retort, and which must be half 



• Annales (le Chimie, vol. LXI, p. 201, March, 1807: andjoufnal 

 4c Physi:]ue, vol. LXIV, p. i'60. 



filled 



