M.W jfOJ H 



- with the decrease of impurities. The Baxne lime 

 low a varying in< in volume in slaking due t<> amount 



I "iii- bIow addition of water raises less heat, 

 [me in an open boa Less beat than in a closed 



With an equal volume of water the increase in size of a rich 

 lim< . Richardson illustrates this point as folio 



L of H 2 Increase in volume 



} 1.6 



1 2 



2.5 

 With a poor dolomitic lime it was 



a 1.7 



■ rule can therefore be laid down. For instance, 1 peck 

 lump lime with 44^ of voids, on slaking with its own volume of 

 wat ve 2£ pecks of fine powder of slaked lime. From 1 



peck of closely packed lime, 2.5 vol. of slaked lime were obtained. 

 more found large increases, some running 2.4G, 2. S3, 3.21, 

 2.40, but tin- caused by bis using larger amounts of water 



than an- generally taken in practice. 



The following table gives the tests made by both Gilmore and 

 Rj rdson. 



Rocklanil Rondout New York 



tiilmore Richardson 



Weighl "f lime in pounds 5 5 5 



Vol. of lime in cubic centimeters . . 1557 1806 2 3.~»n 



Vol. of wah-r required 2 :»33 3 300 2 000 



- lit to slake, in #.. 2.24 2.24 1.6 

 in volume 2.4G 2.14 1.91 



ic increase is 1.53. Lime also slake> simply on 

 to the air. hut this i- nol good for mortar-making, as 

 king ha- !i<>t been accompanied by any violent disengage- 

 to rupture the mass. The larger particles also have 

 a hardened rim. 



