1 68 Cellulose 



or, calculated to C,H,O compounds only 



() <*) W (rf) (0 



C . . .52-06 50-28 48-69 53-92 48-34 



H . . 7-07 6-37 6-42 7-63 6-38 



O . . . 40-87 43-35 44-89 38-47 45-28 



(a) The following were the results of the first treatment, boiling 

 in 1-25 p.ct. H 2 SO 4 , in regard to the percentage and elementary 

 composition of the N-free constituents dissolved : 



It may be noted that the albuminoids are almost entirely 

 removed by these treatments, as is evident from the determinations 

 of N in the residual crude fibre, viz. : 



N O'i7 o-oo o-oo 0*42 0-37 



The conclusions drawn from these results are, that the con- 

 stituents dissolved are of relatively high C percentage, that they 

 consist in large proportion of the lignocelluloses of the raw material, 

 and that therefore the residual crude fibre is a product of purely 

 empirical, and in fact arbitrary value. 



The subject is also exhaustively treated by A. Miintz, in a 

 brochure entitled * Recherches sur 1'alimentation et sur la produc- 

 tion du travail' (Ann. Agron. 1877-8, No. 2). This contains the 

 results of a very elaborate inquiry into the muscular work of the 

 horse in relation to the food consumed. The inquiry involved the de- 

 termination of the nutritive value of typical fodders, as its necessary 

 basis, and the author's conclusions in regard to the ' cellulose ' 

 constituents of these food-stuffs are noteworthy. After showing 



