INDEX. 



Helmont, Van, his gas fylveftre, p. 112. 



Hemlock Water. See Cicuta. 



Hippomane Mancinella, See Mangeneal-trte> 



Hot-houfes, air of, is offenfive, p. 49. 



Honey -fuckle. See Caprifolium. 



Hungary, why its plains are unwholefome, p. 148.— How 



to remedy this evil, p. 291. 

 Hyofcyamus yields dephlogifticated air by day, exp. 61.—^- 



its effects upon common air, p. 65. — Its remarkable 



quality of contaminating common air by night, exp. 



43, 44.' — Is checked by cold weather, p. 289. 



I. 



Inflammable air, what ? p. live—Effect of plants upon 

 it, p. 9 & feq. exp. 103— 118. — Is changed by 

 plants into fulminating or explofive air even by night, 

 p. 106. — 'Is produced by Fraxinella when in flower,, 

 p. 146. — Extricated from food in our inteftines, p. 

 118. 



Inflammatory D'feafes, new method of curing them, p. xlvi, 



Inteftines, what air they contain, p. 116. 



Inundations, to be prevented, p. 291. 



Juniperus Virgineana, its dephlogifticated air examined,, 

 exp. it. 



L. 



Lake Pontine, why its air is dangerous, p. 147. 

 Lamium Alhum, its natural air examined, p. 26. —Its 

 dephlogiilicated air examined, exp. 3. 



Y Laurocerafus, 



