356 DATE SUGAR INDUSTRY IN BENGAL. 



The conclusion is that the amount of sugar lost in the scum 

 is not large, being much less than 1%. 



The figures in the two preceding tables give an idea of the 

 amount of juice which is usually boiled by a cultivator in the district. 

 In the experiments above recorded the number of trees tapped for a 

 single boiling varied from 20 to 130. It has been suggested that 

 the introduction of iron pans for boiling would be an improvement, 

 but it is a question if they would be worth while for such small 

 amounts of juice. Again the man who only boils the juice from 

 20 trees daily cannot afford to invest in, say Rs. 20 for an iron 

 pan. 



Here it will be worth while to insert a few figures shewing the 

 losses of sugar in boiling cane juice. 



Leather 1 found in experiments at Cawnpore and Poona that 

 the total loss of sugar on boiling cane juice into gur by the country 

 open pan method was 9*76 13*95%. 



Clarke 2 as a result of 13 experiments in the United Provinces 

 found an average loss of total sugar of 15'7% and of sucrose of 19*7%. 

 Clarke 3 has since shewn that about 5% of this loss goes in the scum 

 which is skimmed off during boiling. 



The author of this paper found as a result of 25 experiments 

 at Partabgarh, United Provinces, in 1909-10 an average loss of 

 sucrose of 18'45% and of the total sugar 14*80%. 



The three sets of experiments outlined above shew that the 

 average loss of cane sugar during the native process of boiling the 

 juice amounts to not more than 20% and of total sugar 15%. Five 

 per cent, of this loss is accounted for in the scum removed. 



The average loss of sugar in boiling date juice was shewn by the 

 writer's experiments to be 12*5% of the total sugar and about the 

 same quantity of sucrose. 



1 Agricultural Ledger, 1896, No. 10, page 15. 



2 Sugarcane at the Partabgarh Experimental Station, 1908, Bull. No. 13 A. R. I., Pusa. 

 8 " The Efficiency of the Hadi Process of Sugar Manufacture," Agricultural Jour, of India, 



Vol. V, Part I, page 38. 



