336 DATE SUGAR INDUSTRY IN BENGAL. 



sugar, is frequently met with, and the trees at Khartalar, Jessore, 

 are good illustrations of this. The trees were very heavy yielders, but 

 the specific gravity shows the juice to be very concentrated. 



The curves shew that very generally the sugar concentration is 

 much lower in dokat than in jiran juice. The dokat curves for sugar 

 concentration are seen in places to reach above the jiran curves, but 

 wherever this is the case it corresponds to a low yield of juice, and, 

 as we have seen, the amount of sugar in the juice of a particular 

 tree depends largely on the amount of the juice-flow. 



The tekat curves on the other hand shew that tekat juice is 

 much more concentrated than either jiran or dokat. This is no 

 doubt due to the small yield of juice. At the same time reference 

 to the tables at pp. 322-23 for trees Nos. 3, 11, 16, and 20 shews that 

 though tekat juice is rich in sugar a large proportion of this 

 consists of reducing sugar. This is only natural, as after the juice 

 has flowed from the cut surface for three days this surface has 

 become very dirty and much yeast has grown on it. So that 

 we should expect much fermentation to go on in the tekat juice. 



Similarly for the same reason the proportion of reducing sugar 

 in dokat juice is much higher than in jiran juice. One can see this 

 on pp. 322-23 where the tables for trees Nos. 3, 1 1, 16 and 20 are given. 



In our experiments the following are the extremes between 

 which the amounts of sucrose and invert sugar have varied in jiran, 

 dokat and tekat juice : 



Cultivation. The best cultivated gardens have generally been 

 observed to give the best yields. The excellent garden at Khartalar 

 (p. 325) is a very well cultivated one. Cultivation encourages a 

 larger and more healthy growth of the tree. 



See Table on pages 325-26. 



