DATE SUGAR INDUSTRY IN BENGAL. 



unsmoked. Two V shaped grooves were cut in the juice yielding 

 surface instead of the usual one and two pegs inserted, one for each 

 of the two pots. The juice from each pot was analysed next 

 morning. Numerous experiments were carried out on these lines 

 but no definite result was obtained. Sometimes the smoked and 

 sometimes the unsmoked gave the best juice. It was decided that 

 tests carried out in this way are useless because 



(1) It is impossible to collect equal amounts of juice in each 



pot. Indications were obtained that small amounts 

 of juice fermented much more rapidly than large 

 amounts. 



(2) It is possible that juice yielded from different parts of 



the same cut surface is not uniform in composition. 



(3) It has been shewn (pp. 327-328) that juice yielded at 



different periods during the night varies in composition. 

 Therefore unless the rates of flow of juice into the two 

 pots are relatively the same throughout the night, we 

 shall get variations in composition of the juice due to 

 this cause. 



It was frequently noticed that the juice in the smoked pots 

 was quite clear, whereas the juice from the unsmoked pots was 

 cloudy. 



The effect of smoking was finally decided in the following 

 way: 



Four quite new pots were obtained. Two of them were smoked 

 and two left unsmoked. During the evening a large quantity of 

 juice was collected. This was analysed and measured. It was then 

 divided into four equal portions one of which was put into each of 

 the four pots, which were then hung up on trees near the bungalow 

 during the evening. Next morning the juice was analysed from 

 each of the four pots. 



The experiment was carried out in an exactly similar way on 

 three successive days. The results obtained are here set out. 

 Jiran juice was used in each case. 



