( 91 ) 



aux recherches analytiques par M. DAVY. T. LXXV. p. 274. Obset^ations sur let 

 trots precedens Memoires da M, DAVY par GAY-LUSSAC et THENARD. T. LXXV. p. 

 318. Recherche* Physico-Ghemiques par M. M. GAY-I.USSAC et THENARD. T. I. p. 

 45. Paris 1811. 



(32) Philosophical Magazine and Journal comprehending the various branches of 

 science, the liberal and fine arts, Geology, Agriculture, Manufactures and Com- 

 merce by A. TILLOCH. V. LVI. p. 450. 1820. 



(33) Deze Verhandeling is: Researches on the oxymuriatic acid, its nature and 

 combinations: and on the Elements of the muriatic acid. With some experiments 

 on sulphur and Phosphorus , made in the laboratory of the royal Institution , read 

 July 13, 1810. in Phil. Trans. V. XCVIII. p. 231. 1810. One of the most sin- 

 gular facts that I have observed on this subject , and which I have before referred 

 to , is that charcoal, even when ignited to whiteness in oxymuriatic or muriatic acid 

 gases , by tho Voltaic battery , effects no change in them ; if it has been previously 

 freed from hydrogene and moisture by intense ignition in vacua. This experiment 

 which I have several times repeated, led me to doubt of the existence of oxygene in 

 that substance , which has been supposed to contain it above all 'others in a loose 

 and active state , and to make a more rigorous investigation than had been hitherto 

 attempted for its detection, zegt hij op bl. 232. ' SCHEELE , zegc hij op bl. 231, 

 considered the oxymuriatic acid as muriatic acid freed from hydrogene, and the 

 common muriatic acid as a compound of hydrogene and oxymuriatic acid and on this 

 theory he denominated oxymuriatic acid dephlogisticated muriatic acid, en laat nu 

 op bl. 237 volgen: It is evident from this series of observations , that SCHEELE'S 



"view {though obscured by terms derived from a vague and unfounded general theory,} 

 of the nature of the oxymuriatic and muriatic acids, may be considered 1^an ex- 

 pression of facts, en op bl. 246: In considering the muriates, as compounds of oxy- 

 muriatic acid and inflammable bodies , cet. CUVIER fchrijft in het Ilde Deel van 

 zijn Histoire des progres des sciences naturelles , p. 108. M, M. THENARD et GAY- 

 LUSSAC firent au commencement de 1809 des experiences, <Tou il resultoit qu'il est 

 impossible d'extraire F oxygene de ce que Von appette communement acide muriatique oxy- 

 gene" , et que pour continuer a croire qu'il y existe , il faut supposer que dans tous 



M 2 lei 



