• '•, 2 M-.w YOBX BTA1 B Ml BEUM 



ause tlicv have been subjected to less leaching 

 1'V rainfall. 



of lime agriculturally great, it- effect being 

 both chemical and physical. Physically Lta action is to cause tho 

 soil partic • flocculate, thai La to gather together and form 

 compound grains, thua promoting the drainage <»t" the soil, aerating 



and also making it more easily worked. Chemically it ser 

 to hasten ganic matter in the soil as weH as that 



of the mineral particles, and thereby indirectly to facilitate! the 

 cha any iron compounds from a ferrous to a ferric condi- 



tion, rves as plant food. 



While lime has a stimulating effect on the soil, at the same 

 time it tends to drain it of nourishment more rapidly than would 

 otherwif The percentage of lime required to 



produce desirable results in a soil is said to he very small, those 

 with only 1,'c of the carbonate being often productive. 



Pottery glazes 



Tn pottery manufacture lime is used in two different directions: 

 viz in the manufacture of the pottery body, serving as a flux, and 

 a constituent of the glaze. 



Minor uses 



Other uses of lime are, for purifying drinking water; as a dis- 

 infectant; as a polishing material; for preserving eggs; in dyeing; 

 in the manufacture of calcium carbid; for dehydrating alcohol; 

 in the manufacture of lime pencils for oxyhydrogen lights. 



Mortar 



Mortar is a mixture of slaked lime and sand used for the pur- 



: bindii sonry t- gether, and more lime is probably used 



this purpose than for any other. 



The use of li a mortar ha- been known for many years, 



Qcientfl were familiar with the fact that by means of 



simply burning lin. and BOaking the burnt mass in water 



