398 BOARD OF AGRICULTURE. 



These cakes are highly valued for feeding purposes. A 

 hundred pounds of press-cakes are valued at twenty-nine 

 and six-tenths cents when hay is worth twenty dollars per 

 ton. The cellular residue of beets left after the abstraction 

 of the juice by other modes is, as a general rule, less valua- 

 ble, on account, mainly, of the presence of a larger amount 

 of water, and thus a smaller amount of «solid organic mat- 

 ter. For instance, the residue, after the treatment with cen- 

 trifugal apparatus and the subsequent displacement process, 

 is considered worth but sixteen and nine-tenths cents per 

 hundred pounds. By applying the centrifugal apparatus for 

 the separation of the juice, about thirty per cent of refuse 

 pulp is obtained, which consists (approximately) in one 

 hundred parts of — 



Per cent. 



Nitrogenous organic matter 1.030 



Non-nitrogenous organic matter .... 14.710 



Saline constituents 1.660 



Water 82.600 



100.000 



The refuse pulp obtained by hot maceration of dried beet- 

 roots is held at from twenty-four to twenty-five cents per 

 hundred pounds ; while that obtained by a maceration of the 

 fresh beet-roots after Roberts's improved diffusion method 

 (free from an excess of lime) is valued at from seven and 

 two-tenths to nine and one-tenth cents per hundred pounds. 

 The last-named residue contains but from five and five- 

 tenths to six and nine-tenths per cent of dry substance ; 

 while common press-cakes contain twenty-five per cent. 

 Roberts's mode of operation leaves about seventy pounds 

 of cellular residuum for every hundred pounds of beet, 

 which contains, as stated previously, more nitrogenous 

 matter in proportion to dry substance, but less sugar, than 

 common press-cakes. 



The diffusion mode is applied in the beet-sugar factory 

 at Portland, Me. The feeding value of the refuse pulp 

 depends largely on the state of moisture. In case of an 

 equal state of dryness, the refuse from the diffusion system 

 is the most valuable, on account of from forty to fifty per 

 cent more of nitrogenous matter than in the mode above 

 described. Without a previous pressing, the refuse is worth 



