138 FEEDING WITH SUGAR BEETS, SUGAR, ETC. 



last for at least 20 minutes. The cossettes subsequently give 

 excellent results by pressure, and their weight may be reduced 

 to 15 per cent, of the weight of the beet. 



The mixing of the lime with the cossettes may be done in 

 many ways. The weak juices running from the diffusion 

 battery are used again instead of water for the general working 

 of the battery. The advantages of such practice are as follows: 

 1st. Considerable diminution in the quantity of water required 

 for diffusion. 2d. The saving of 0.3 to 0.4 per cent, sugar, 

 which is frequently lost in the refuse water and cossettes. It 

 is said that juices extracted by this method are at least. as sweet 

 as those from the first carbon atati on, consequently the latter 

 operation may be effected with 1 per cent, of lime, giving a 

 purity equal to that obtained with 3 per cent, by the customary 

 process. It is estimated that by an additional expense of 

 $1,600 there would result an advantage of $1.40 per ton of 

 , beets, and for an ordinary campaign a saving of over $12,000. 

 These figures, if correct, are of sufficient importance to warrant 

 their careful examination by every beet-sugar manufacturer. 



Bosse urges that the several modes mentioned in the fore- 

 going be combined. He submits the residuunv to hot water 

 and alkali during pressing, and re-heats the cossettes on leav- 

 ing the diffusors in a large receptacle containing ammoniacal 

 water, which is collected during the evaporation of the juice in 

 the triple effect. 



Scheermesser uses in the last diffusor of a diffusion battery, 

 water that is saturated with anhydrous sulphurous acid. 

 Under these circumstances the resulting residuum is easily 

 pressed, and the albuminoids are coagulated by this acid, under 

 which conditions they will be retained in the cossettes that are 

 pressed, and will not pass off in the sweet waters. When the 

 product is dried and left in the air for a certain time the 

 anhydrous sulphuric acid seems to evaporate, but it remains 

 to be proved whether the product could be advantageously fed 

 t to cattle. 



Pulp or cossette Most farmers in continental Europe, when contracting to grow 



contracts, beets for the sugar factories, stipulate in advance that they must 



have in return at least 50 per cent, in weight of the beets fur- 



