MAGNESIAN LIME 



soils, use magnesian limestone freely. 

 They recommend its use to farmers 

 wherever there is advantage in point 

 of price. The advice is safe that the 

 limestone of a given fineness should be 

 chosen whose total percentage of carbonates 

 of calcium and magnesium is the highest. 

 The example of these scientists, buying pul- 

 verized limestone for agricultural colleges 

 and experiment farms, and for their own 

 farms, should loosen the curious hold that 

 the early warnings of a laboratory experi- 

 menter took upon public imagination. 

 The farmer should buy limestone on a basis 

 of ability to correct soil acidity, and make 

 each dollar do the most possible toward 

 that end. 



Most limestones contain some percentage 

 of magnesium, and in the case of a pure 

 dolomite over 45% carbonate is present in 

 combination with calcium carbonate. A 

 stone rich in magnesium slakes less readily 

 than one high in calcium, and therefore is 

 preferred by manufacturers shipping pul- 

 verized burnt lime to reach its destination 

 before slaking. 



