43 



mills. Speed of mills 15 ft. per minute. Mills propelled by 

 engines <>f walking beam type. Has balance but weighs cane 

 only occasionally. Grinds about 350 to 375 tons of cane per day. 

 Metric system of weights used. Extraction of juice over weight of 

 cane 57 to 60. 



Double-bottom copper defecators used; capacity 375 Imp. gallons. 

 Density of juice, Brix, 18 to 20. Juice heater heats juice to 185 F. 

 Uses* a little sulphur in juice at times. Uses 3 } to 5 Ibs. lime per 

 defecator. Juice limed to slight alkalinity. Rendiment of sugar in- 

 dicated in juice, 86. 



Two vacuum pans, one copper, one iron; capacity of larger pan 18 

 tons. 2nd sugar grained in pan; 3rd boiled to string. Incorporates 

 second massecuite. 1st massecuite allowed to cool in 2X4X4 ft cars 

 for 24 hours; 2nd massecuite for 48 hours; 3rd for number of days 

 or weeks. Massecuite cars elevated to floor above, massecuite 

 dumped into mixer and then to reservoir. Do not weigh masse- 

 cuite. Two batteries of centrifugals; one, overhead pulley bottom 

 discharge, 30 inch type; the other battery of centrifugals, bottom 

 pulley, 40 inch type. Revolution of centrifugal 1000 to 1100 per 

 minute. Makes three classes of sugars. Sugars dried in centrifugals. 

 Occasionally sugars treated in centrifugals with a little hot molasses. 

 Polarization of 1st sugar 97.3. 1st sugars worked in separate bat- 

 tery. Grain medium. Color rather dark. Crystals regular.'Good shipper. 



Steam plant both old type and tubular boilers. Plenty of bagasse. 

 Bagasse dried in field and fed by hand. Total weight of bags filled 

 227 Ibs. (Eng). 



Four cuts of cane made. Cane irrigated every three weeks. Soil 

 requires plenty of water. Soils contain some alkali. Uses guano as 

 fertilizer. Estate in upper part of valley. About 15 miles straight 

 line from coast. Climate warm. 



FACTORY No. 3. 



One dry double crushing plant. Three roller mills. Cylin- 

 ders 32 X 78. Mills propelled by separate engines walking 

 beam type. Mills fitted with hydraulic pressure apparatus. Reg- 

 istering balance used. Grinds about 500 tons of cane per day. Grinds 

 33 tons per hour. Average extraction 68. Speed of mills 1st mill 

 22 J ft, per minute; 2nd mill 18 J. 



Aims to secure juice with density as high as possible (this depends 

 on the manipulation of water aud time of cutting). Average purity of 



