146 MIXED MANURES AND CALCIUM COMPOUNDS 



(e) Quicklime.  — This may be determined by- 

 exposing a weighed sample in an atmosphere of 

 aqueous vapour until all the lime is slaked. After 

 drying at ioo° C, the increase in weight is determined 

 and the calcium oxide originally present calculated 

 from the equation CaO + H20 = Ca(OH)2. 



The slaked lime in the sample is {d)-(e). 



