OF THE PRECEDINO CHAPTERS. W^ 



gen, and decomposes easily. For this reason, it shoaU 

 be at once covered, or made into compost. 



Saline and mineral manures. 



Lime. Used as quicklime, slaked lime, and mild, 

 or {.ir-slaked lime. 



Quicklime only to be used where there are no rich 

 manures, as when in contact with them, it liberates 

 nitrogen, and thus deteriorates the manure. 



The effect of lime in the soil, is to decompose or- 

 ganic and inorganic compounds, as well as to furnish 

 lood for plants. 



Marls, a form of • of lime; id also 



another form : their il effect a.^ s. 



CHAPTER X. 



Saline and mineral manures {continued). 



Gypsum, or plaster of paris, a compon " " -jc 



acid and lime, valuable f(»o«I tor plants. is 



in attracting gases and m i)y adding, 



for a scries of years, witi. 



Common salt, nitrate of soda, nitrate of potash 

 (saltpetr*-), rarl— >•■•" "♦' -"'!'. '•♦•• •" ••"wcrful ma- 

 nures. 



None of thi'^i iii immediate 



contact with tli( ,'pli<Nl in ««mall 



quantities, with half the u^uul uli trd 



manure. A mixture of them, mu> ue 



alone. 



Wood asht s, coal ashes, peat ashes, are all good 

 manures ; ought to be kept from rain till they are 

 used, (iood to exti ' Aoeds, and to mix with 

 other things for sow < 



Soot, a ri ic, cuutains much ammonia and 



ix>rganic s < < >. 



16 



