A Few Popular Facts About Diffusion. 55 



noids ; and (b) non-nitrogenous bodies, usually termed 

 " gums." 



The nitrogenous bodies found in mill juice form 1*3 0/0 

 of the total solids, not sugar, in the juice. Of these nitro- 

 genous bodies 35 0/0 are albuminoids and 65 per cent, 

 non-albuminoids. In the case ot diffusion juice, obtained 

 from a battery worked with cold water the nitrogenous 

 bodies are 1*4 0/0 of the total solids, not sugar, in the juice, 

 only 24*5 0/0 of which are albuminoids and 75-5 0/0 non- 

 albuminoids. 



In the case of Diffusion juice, again, when the battery is 

 worked merely at the very moderate temperature of 150 

 degrees Fahr., the nitrogenous bodies extra6led increase 

 to 209 0/0 of the total solids, not sugar, in the juice. 

 That is 33 0/0 more than are extra6led with cold water, 

 and 38 0/0 more than are found in the mill juice. And 

 of these nitrogenous bodies only io*g 0/0 are albuminoids 

 and 89" I 0/0 non-albuminoids. In this last case it seems 

 that the hot water coagulates the albuminoids and causes 

 them to be left behind in the exhausted slices. 



These figures are very strikmg and significant. 

 With immature canes, and increased battery tempera- 

 tures, they are said to become still more striking and 

 significant, and the usual working temperature of a 

 Demerara Diffusion Battery is 212 degrees Fahr. One 

 thing seems to be certain, diffusion and mill juices 

 do not behave alike in regard to fermentation, and 

 whereas in the case of mill juice, changes are quickly 

 detefted, in diffusion juice they may be concealed, 

 and yet be proceeding. The subje£l is too important to 

 admit of rash and partially matured remedies, and the 

 first step obviously is to find out the nature of the whole 



