44 



juice 87. Uses double-bottom copper defecators. Limes juices to al- 

 kalinity; 8 to 10 Ibs. of lime per defecator. Filters juices. No juice 

 heater. Juice run direct from defecators to presses. No sulphur or 

 other chemicals used in juice. Requires 35 to 45 minutes to def- 

 ecate. Total evaporating surface of triple effect 4500 sq. ft. 

 Vacuum of first chamber of triple effect 8; second 18; third 27, 

 19800 litres of juice evaporated per hour at 12 to 35 Beaume. 



Copper vacuum pans. Boils off strike in 3 J hours. Pressure on 

 pans 40. Vacuum 28. Grains 2nd sugar in pan. 3rd and 4th 

 boiled to string. 1st massecuite discharged from pan at 93 to 95 

 Brix. Discharged into cars of 1 f tons capacity. Analysis of 1st 

 massecuite Brix 93.55, sucrose 83.66, glucose 3.09, purity 89.42, 

 ash 1.90. Massecuite cooled as follows. 1st massecuite in 12 

 hours; 2nd in 4 hours; 3rd in 5 days; 4th in 20 days. Centrifugals 

 1st and 2nd massecuite at about 37 degrees C; 3rd and 4th cold. 

 Massecuite in cars duniped by hand dumper into mixer in reservoir. 

 Massecuite cars raised to upper floor by elevator. Battery of 8 

 overhead pulley Weston centrifugals, 30 inch type. Revolutions 

 per minute 1200. All sugars worked in same battery of centrifugals. 

 Sugar from centrifugals discharged from below on to apron. Time 

 for centrifugalling massecuite 1st sugar 3 minutes; 2nd sugar 7; 

 3rd sugar 11; 4th sugar 17. Recovery of sugar over weight of 

 massecuite 1st sugar 63; 2nd sugar 52; 3rd sugar 35; 4th sugar 28. 

 Sugars dried on floor. Polarization of sugars 1st sugar 97.80 to 

 98; 2nd sugar 93 to 94; 3rd sugar 89 to 91; 4th sugar 87 to 89. 

 Rendiment of sugars over weight of cane 1st sugar 8.11; 2nd sugar 

 1.97; 3rd sugar .60; 4th sugar .25. Average rendiment of sugar 

 ov'er weight of cane 10.94. Sacks hold 225 Ibs. (Eng). Make up 

 mostos at 7 Beaum; reduced to 1 J. 



Ten boilers two tubular, eight old type. Excess of fuel; uses 

 only 50 to 60 % of bagasse. Bagasse dried and fed by hand. 



Irrigates cane once in three or four weeks. Uses guano, lime, 

 ashes, filter-press-cake, gypsum, sulphate of potash, nitrate of soda; 

 guano is chiefly used. Over 7000 acres now in cane. Estate situ- 

 ated in middle of the valley. 



170 men employed in factory during 24 hours. 16 men unload 

 cane at the conductor. 



FACTORY No. 4. 



Some factories make what is called "white sugar" which is merely 



