THE CONTROL OF THE FACTORY. 



the glass tube e which delivers the juice to the receptacle / only extends to 

 the middle of the bottle d ; about one inch from the bottom of the bottle is 

 fixed a piece of fine wire gauze ; the end of the tube / is drawn out into a fine 

 point. The object of the bottle d is to act as a dashpot, and that of the gauze 

 to keep back fine particles which might choke the end of the tube e. By 

 connecting the tube e to a tall cylinder with a tubulure at the bottom as 

 shown at ^, the cylinder can be kept full with a continual flow of juice, and a 

 hydrometer placed therein will allow of the density of the juice being 

 continually under observation. Where the last mill juice is pumped separately, 

 this simple apparatus is invaluable in guiding the attendant at the water 

 tanks. 



A very simple and convenient sampler may be arranged by connecting a 

 stout wire to the juice being sampled ; if, for example, the first mill juice is 

 being sampled, a large bottle, in the neck of which is a funnel, is placed close 

 to the mill ; a stout copper wire is then arranged so that one end rests on the 

 funnel, and the other leans against the mill roller ; the juice flows down the 

 vire and drips into the funnel, the amount of sample collected being 

 dependent on the size of the wire. In using this sampler it must be borne in 

 mind that the composition of juice from the front and back rollers varies very 

 much and especially so with maceration. 



Sampling of Megass. Well crushed megass coming away in a uniform 

 blanket is easily sampled, the only precaution necessary being to take 

 into account the megass at the ends of the rollers, which is frequently 

 imperfectly crushed ; it is hence best to take a large sample, going right across 

 the breadth of the mill, to mix this thoroughly and then to take a sub-sample 

 from the large sample. Megass when sampled must be weighed for analysis 

 at once, as it rapidly loses or absorbs moisture. Geerligs 4 has shown that 

 megass can be preserved for indefinite periods by means of intermittent 

 sterilization in sealed vessels, but this process is, perhaps, too troublesome for 

 use except in special cases. 



Sampling of Syrup. A definite quantity of syrup is taken by the 

 attendant from each tank filled, and stored in a large bottle ; the analysis is 

 made on the accumulated samples ; if the bottles used are well washed and 

 kept strictly clean no preservative is necessary. 



Sampling of Massecuites. As each pan is struck, a sample of the masse- 

 cuite should be allowed to fall into a suitable vessel, such as a large wide- 

 mouthed bottle ; one sample from each pan strike is not sufficient, as masse- 

 cuite varies in composition in different parts of the pan, and a sample should 

 be taken at the beginning, middle, and end of the strike. When the receptacle 

 is full it should be sent to the laboratory for sub-sampling. Massecuites will 

 keep for long periods, and a daily analysis is not necessary ; an accurate 

 analysis of a massectiite, particularly of a low one, is a process which takes 



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