V 



r. 



"mri. 



oilb 



y 



! been 



terials 

 ted bj 



i fluid 



n and 



gaffes, 



n fined 

 3 each 

 flate, 



orm a 

 offo 



X.4. 

 where 



ndby 

 azote 



I 



:oDtri- 

 like 



:i 



.or 



etiitie 

 :ribute 



fpho- 

 ifis of 



D 



aays 



Sect. XII 



PULVERIZATION 



days fo much diminiflied 



ny only half the bottl 



which 



probably occurs from the decompontiou of both the water and a r 

 Ld the produaion of ammonia ar.d mtrous add, both which are be 



lieved to be fo ferviceabl 



9 



& 



irientioned in Sed. X 



That the heat of the atmofpherlc air is given out, when oxy 



unites with carbon 



(liewn by the heat of hot-bed 



d of fer 



menting faccharhie and mucilaginous fluids, as in the produaion of 



dent fp 



and may be beautifully feen in the combination of oxy- 

 gen with carbon in the burning of one of thofe common letter-wa. 

 fers, which confift of the mucilage of flour, and red lead or mi- 

 nium ; not one of thofe, which are called Irifh wafers, and which 



ed with verm 



blaze 



the flame of 



If one of thefe minium wafers be made 

 candle, the oxygen contained in the mi- 

 nium uni'teVwkh the carbon of the flour, and gives out a very lumin^ 

 ous fpark, and confequent great heat, and at the fame inflant a fmall 

 alobule of melted lead drops down, and may be agreeably fecn it — 



\ 



cd on a fheet of white paper held unde 



It is alfo probable, 



f phof^ 



that heat is emitted during the produaion of nitrous and 



phoric acids* , , , r j 



From thefe obfervations it appears, that feeds fhould be fown, and 



planted, foon after the foil is 



turned 



while the produc 



of the carbonic, nitrous, and phofphoric acids, and of 



kali 



d perhaps many oth 



proceffes, are proceeding, rather th 



after they are completed 



and alfo while the fluid element of 



paffing from its combined ftate, and permeating the foil, which in th 



old climate in the vernal months muft be highly cond 



T-* 



tation. 



By thus turning over the foil with the plough or fpade the pe 



etrability of it by the roots of plants is alfo much facilitated 



and 



for this purpofe, as well 



for the admixture of atmofpheri 



fcarcely be reduced into too fine molecules, or a kind of wet pow 



der 



