mine a planter to prefer a hardy fibrous variety to a soft 

 cellular variety such as the Samsara or the Otaheite cane, 

 and in such a case the use of a decorticator or at least a 

 shredder before crushing is advisable. But as the horizontal 

 mill, the shredder, or the decorticator, would cost more money 

 than our cultivators could afford to spend, these improve- 

 ments are meant for planters and capitalists who may wish 

 to launch out into sugar-planting. 



622. Whether steam-power, bullock-power, or buffalo- 

 power is employed for crushing canes, it should be borne in 

 mind that too great a speed or jerky motion of the rollers 

 results in diminished yield. This precaution is specially needed 

 where steam-power is employed for working the mills. A 

 roller of 3o-inch diameter should make only about 4 revolu- 

 tions per minute. Modern appliances for crushing sugar- 

 canes, and for clarifying and boiling the juice, are obtainable 

 of Messrs. Pott, Cassels and Williamson and Messrs. Laidlaw 

 & Co., both of Glasgow, and also of the Sangerhauser 

 Engineering Co. Ld. of Berlin. 



623. As the subject of gur and sugar-making has been 

 dealt with in th e previous chapter, we will conclude this 

 chapter by giving the actual figures as to yield of canes, juice 

 and gur for two plots of Khari sugar-cane grown at Sibpur in 

 1900 1901, one manured with the refuse of Cossipore Sugar 

 Factory (i.e. principally bone-charcoal) at the rate of 5 mnds 

 with saltpetre at the rate of 2\ mnds., per acre, added to it, 

 and the other manured with 10 maunds of castor-cake per 

 acre. The crushing of the canes was done in both cases 

 with a two-rollered Behia mill. 



Bone-charcoal Castor-cake 



plot. plot. 



Yield of canes per acre ... 483 maunds 405 maunds 



Yield of juice ... 59 per cent, of the 56 per cent, of the 



weight of canes weight of canes 



Yield of gur per acre ... 38 maunds 37 maunds 



