INDEX. 



inflammable air, ibid. — Tubes made for it, ibid.— ti 



corroded by nitrous acid, p. 172. 

 Elm-tree, the air it yields in the fun examined, exp. 27, 



29. — The air ic yields in the lhade, exp. 49. — Its air 



of the day and the night together, exp. £2. 

 Eudiometer. See alfo left. — Defcription of it, p. lx. 



— That of Abbe Fontana defcribed, p. 153. — The 



manner of uling it, p. 155. — Neceffary cautions in 



ufing it, p. 161.— Its effects demonstrated, p, 125.— • 



The author's method, p. 278. 

 Euphoria, peculiarity of its aii -bubbles, p. iS. 

 Explofive air, produced by the vital adion of the plants 



from inflammab e air wkhout the admixture of refpir- 



able air, p. i©6. exp. 267. 



F. 



Filberts contaminate common air, exp. 79. 



Final cau/es of the operations of nature indicate the ex- 

 igence of a God. p. 139. 



Fixed air, what: p. lviii. — It does not exift as fuch in 

 vegetables, p. 1 1 3. — l^ thrown out by the lungs, p, xlvi. 



Fhiuer<, their remarkable powe of contaminating com- 

 mon air -qualv in every fi uation,p. {•$. — They yield 

 poiibnous air by night aid by day, and poifon ordinary 

 air, exp 6: — o. — Danger from them, p. $6. — Their 

 vi ulent ettecl not checked by the fun, p. 56. nor by 

 cold weather, p. 288. 



Flu'di, whether any naturally fuch exift ? p. r 12. 



Fontana, Abbe. Excellence of his Eudiometer, p. lx« 

 His experiments upon the air of wat' r, p. 128.— His 

 new discover of procuring dephlogtfticated air in any 

 quantity wanted at a chtap rate, p. xlv. 



Fraxinella 



