Mangold-Pulp (the Refuse of Beet-root Distilleries). 5 



it was given to them unmixed with any other food. Cows and 

 sheep at first would not touch it ; on mixing the pulp, however, 

 with clover-chaff they did not object to it, and by degrees seemed 

 to acquire a liking for the mess. 



I shall presently give an account of some feeding experiments 

 instituted with a view to ascertaining practically the comparative 

 fattening value of the pulp and of fresh mangold-wurzel. But 

 as many persons entertain very erroneous opinions respecting the 

 relative value of the different constituents of food, and their 

 adaptation to particular purposes, and as it may be at all events 

 interesting to most to trace the changes which mangolds undergo 

 in the process of distillation, I shall briefly endeavour to describe 

 these changes. We shall best comprehend this matter by com- 

 paring the composition of the pulp with that of the mangold-root 

 from which it is made. Two specimens of yellow-globe man- 

 golds, analysed by me some time ago, were found to contain in 

 100 parts : 



Composition of Yellow Globe Mangolds. 



1. 2. 



Water 87-440 88-450 



Sugar, gum, and soluble pectin compounds .. 7*408 7'538 



Soluble mineral matters .. 1'356 '952 



956 -887 



144 '104 



^Soluble albuminous compounds 

 {Insoluble albuminous compounds 

 Cellular fibre and insoluble pect nous com-1 O .-QO LOOK 



pounds (crude fibre) f 2 8 < 



Insoluble mineral matters 



113 -074 



100-000 100-000 



*Containing nitrogen '153 "142 



t Con taming nitrogen *023 -017 



Total nitrogen -176 '159 



A comparison of these analyses with the preceding analytical 

 results, representing the composition of pulp, will show 



1. That the proportion of water in the pulp is increased nearly 

 3^ per cent. ; 



2. That the sugar has almost entirely disappeared in the 

 pulp ; 



3. That the proportion of crude woody fibre is very much 

 larger in the pulp than in the root itself ; 



4. That notwithstanding the larger amount of water in the 

 pulp, it contains more albuminous or flesh-producing matter than 

 the mangold-roots ; 



5. That the roots contain more soluble albuminous matters 

 than the pulp ; and 



6. That the proportion of soluble mineral matters is more con- 

 siderable in the roots than in the pulp. 



B 2 



