\ 





J 



''^ of ,: ^ 



f. 



•^'hich 



^orrtt 



' ^y its k 



othi 



1119 



/» as the 



^^e rain Ivj 



corn 



1"? fre. 



■^'-^ beiiiff 







-s Sea. XVI 



>m the furface 

 reftrial plants, 

 thofe parts of 

 ^ > o by a coping 

 ofty nights oa 

 le evaporation 

 n their veffels 



I 



Titute one part 

 s a r w th , tbn 



n warm coun- 



1 of flo^vering 



saturating 

 ,t only to ^ 



:event 



the itii' 



In g of the f^"'^ 

 fpirable 



er 



itiat' 



.ij » 



en 



w 



hence 

 till the 



it 



the 



{iW^ 





> 



W 



iho« 



Sect. X. 4 



(hould be here mentioned 



MANURES. 201 



Thefe are by ufing as manures fuch fub 



=;;=:% ...- ~— »■ *-»r.= f^':," 



as quick-lime, and vegetable and animal 



or from the atmofph 

 recrements in the aft of putrefaa 



In hot- 



of crivino- warmth and moifture to the included plan 



in thich they grow ; and a great variety of forcing pumps have been 



houfes fome have already employed fleam as a means both 



the foil 



(Iruded for the purpofe of moift 



the foliage of wall 



but th 



hope from the prefent great progrefs of chem 



re 



fearch, that a means may fometime be difovered of precip.tatmg the 

 water of the atmofphere, u hich the ingenious bifliop Wulon thmks 

 always exifts in it in fuch quantity as, if it was fuddcniy precipitated, 



might again deluge the world 



IV. 



CARBON. 



I. When animal and vegetable bodies are burnt without the accefs 



of air, that is, when their volatile parts are fublimed 



here remains 



quantity of charcoal, a much greater in vegetable bodies th 



in animal ones ; this is termed carbon by the French fchool 



w 



quite pu 



nd is now known to be one of the mod univerfal 



materials of nature. And as vegetable bodies contain fo much of 

 in their compofition, they may be fuppofed to abforb it intire, whe 

 they o-row vigorouCy ; efpecially as it is a fimple material ; but th^ 



y 



may poffibly form 



alfo 



fionally from water and air with 



th 

 nally. 



own 



ffcls, when they are fecluded from 



fs to it exter 



The whole atmofphere contains always a quantity of it in the form 



of carbonic acid, or 



fixed air ; as is known by the fcum, which pre 



d 



fently becomes vifible on lime-water, when expofed to the air ; a 

 which confifls of a reunion of the lime with carbonic acid; which 

 may therefore be faid to encompafs the earth. 



Dd 



The 



