INDEX. 



Berries, black-berries, their effedl upon common air, exp. &!* 



Branches of trees, as far as covered by common bark 5 

 yield an air approaching to common air, exp, 93, 



Brown, Profeffor. His experiment of rendering mer« 

 cury malleable, p. 112. 



Bubbles, the wonderful variety of air-bubbles in different 

 plants, p. 17 —Leaves die when the air bubbles are 

 ihook off, p. 7 1. —Sentiments of Mr. Bonnet on the air- 

 bubbles of leaves, p. 4. — Sentiment of the author, p. 

 5. — The fecond cr^p of air-bubbles contain finer air 

 than the firft, p. 71. 



C. 



Callage, does not much infecl common air at night, 



exp. 1 20. 

 Camomile plant, its power of correcting bad air, exp 580 

 Campbire tree, its air examined, exp. 12. 

 Caoutchouc, ufeful in the experiments on air, p. 171* 

 Caprifolium, its peculiar manner of yielding dephlogifti- 



cated air, p. 17. — Its flowers contaminate common 



air, p. 57. 

 Cataput'ra. See Euphorbia. 

 Cedar of Lehanon^ its falubrious air by day examined,, 



exp. 13. — Its faculty of contaminating good air by 



night, exp. 42. 

 Cicuta virofa yields dephlogifticated air by day s exp. 64* 

 Climate how to diftinguiih the belt, p. 143. 

 Confumpticn, in what climate to be cured, p. 143. 

 Cold checks the general caufe of corruption, p. 142.— 



Checks the mifchievous influence of vegetables upon 

 X air. 



