Ne Ee Eee 
Laurocerafus, its air by day; exp. 62.—Its air of the day 
and the night together, exp. 55.—Begins late in the 
day to yield dephlogitticated air, p. 20.—Its parti- 
’ cular nature, p. 20.—Is one of the moft terrible poi- 
fons, exp. 62.—Contaminates common air by night 
lefs than fome other trees, exp. 119. 
Laurus Camphorata, its air examined, exp. 12. 
Leaves. Sentiment of Mr. Bonnet upon the ufe of them, 
Pp- 3-—Microfcopical obfervations, ibid.—Their ufe 
to the tree, p. 2.—-To the fruit, ibid.—Abforb 
moiflure from the air, ibid.—Their general properties, 
p- § & feq.—Their particular properties, p. 17 —38.— 
Expofe their varnifhed furface to the fun, p. 8.— 
; Yield a ela air by sey 'y P- 41.—Yield poi- 
= air in.the ig and in ide, exp. 30, 44; 
papi effeG checked by cold weather, p p. 283.— 
Their natural air is common air, p. 25.—They yield een 
poifonous air by the warmth of a fire, p. 27.—Full- ~ 
grown give better air than young ones, p. gg. exp. 
122, 123.—Reafon of this phenomenon, p. 97.—Dead 
leaves yield no dephlogifticated air, p. 37.—Kept in a : 
room, whether hurtful? p. 50.—They die foon when 
the air-bubbles are fhook off, p. 71. and why, p. 74, 
"—Their prolific nature in yielding air-bubbles, P. 72 
—The moft part of dephlogifticated air oozes out of 
their under-furface, p. 209.—In fome out of their 
upper-furface, ibid. » 
Z ‘me-tret, its air by night, exp. 37-—Ks faculty of foil 
ing common air by night, and —— it — fn 
the day, exp. 50. 
Lemons contaminate air, exp. 72£—83. 
5. 
