200 On the different GiifcS. 



De Acido a'er'io Opr/fcula Phyfica et Ch€7n'ica, vol. i. 

 p. I, &c. The laft-mcnlioned cheniilT: (howed alio, in his 

 trcatife De Aiialyji Aquarum in his Opiijcula, vol. i. p. 68, 

 as did in England, Browyrigg in the Philolophical Tranfac- 

 tions, vol. Ixiv. part %. ho. 39 ; and, in France, V^cnel in 

 ISlcym'ircs prejentcs a V Acadeviie des Sciences a Paris par divers 

 Savans, vol. ii. that it is to this acid that acid waters are 

 principally indebted for their properties; fo thai feveral che- 

 mical authors, fuch as Bergman De Aquis medicatis fr'tgidls 

 arte parandis, in his Opiijcula, vol. i. art. 6. p. 186; Venel 

 in the work above quoted; Rouelle in lioux's Journal de 

 Medecine', Chlrurgie, &c. for May 1774; Duchanoy -L'/TT^i 

 d'ltniier Us Eaux Minerales, Paris 1780. 8vo. ; Laugier 

 JMineralogie nouvelle, ou lArt de Jaire Ics Eaux Minerales, 

 Sens 1786. 8vo.; Meyer, apothecary to the court at Stettin, 

 in the TranfaA ions of the Fricndiv Society of the Searchers 

 into Nature of Berlin, vol. iv. 1781. p. 313; and the late 

 profcflbr Kolllin in his Method of imitating the Water of 

 Acid Springs by Means of fixed Air, Stuttgard 1780. 8vo., 

 have defcribed the procefs by which they can be exceedingly 

 well imitated. 



With the like care and ingenuity the following writers 

 have examined the nature of the inflammable kinds of gas : — • 

 Volta Let tere full' yiria injlaminabile ddle Paludi, Milan 

 1777 ; Senebier Recherches analjtiques fur la Nature de 

 V Air infiavunahle, Geneva 1784. 8vo.; Minkclers M.motre 

 Jar V Air injlammahle de diffcrentes Suhjlances, Louvain 1784. 

 Svo. ; Mofchcni Ejame inlorno alia Natura e Proprieta dell' 

 Aria itiji.nnmabile paludofu, Lucca 1788; LafTone in Me- 

 vioires de l' Acadeviie des Sciences a Paris for the year 1766 ; 

 Kirwan, Philofophical Tranfaclions, vol. Ixxvi. 1786. part i. 

 Gengembre in M,- moires pre/enis a I'Acjdemie des Sciences 

 par di-vers Sa-vans Etrangcrs, vol. x.; Ravniond Annates de 

 Chimie, vol. x. 179T. p. 19 ; Nicuvvland, Deinian, Trooftwyk, 

 and Bondt, Recbercbes Phjjico-cbyviiques, Amllcrd. 8vo. ] 792, 

 no. I. The three lall:, together with Laurcmbiirg, examined 

 the different kinds of inflammable gas. See Crell's Chemical 

 Annals 1795. vol. ii. p. 195. 310. 430; and 1796. vol. ii. 

 p. : lo and 222. 



Refpe£ling the common nitrous gas, we have the following, 

 works :-^Fontana Recbercbes pbyjiques fur la Nature de I' Air 

 fiitreux ct de V Air dephogijltqu-, Paris 1776. 8vo, ; count 

 ]MorozzQ Lettre fur la Coiiipojitioti du Gas mepbitique et du 

 Gas niireux, Turin J784. 8vo. ; refpcAing Priedley's ib 

 called dephlogiftjcated .nitrous air, Bochauic in Mnnoires 

 de V Academic des Sciences a Bruxelles 178? ; and Deiman, 

 Eoudtj Nicuwlund, and Trooftwyk, Recbercbes Pl^feo-cby^ 

 *■ viiques^ 



