i66 ROOTS, GREEN FODDERS, ETC. 



Maize. — Maize germ meal, maize bran, gluten feed. 



Rice. — Rice hulls, rice meal or bran, rice polish. 



Commercial samples should be examined and 

 compared, if possible, with authenticated genuine 

 samples. Many of the feeding meals and milling by- 

 products are mixed with sweepings, earth, sand, weed 

 seeds, rust spores, chaff, etc, and occasionally are 

 deliberately adulterated with such substances as chalk 

 and gypsum, earth nut, coffee and rice hulls, dried potato 

 pulp, etc. Indeed, these materials are amongst the 

 most sophisticated of the feeding stuffs. A determina- 

 tion and examination of the ash, and observation under 

 the lens and microscope are generally sufficient to 

 detect gross adulteration. 



CHAPTER XVII 

 Roots, Green Fodders, etc. 



Roots. 



The root crops are characterised by their high water-content and, 

 in the dry matter, of a large proportion of sugar and non-protein 

 nitrogenous matter. Owing to their physical condition, numerous 

 modifications are necessary in their chemical examination. 



164. General Analysis of Roots — Swedes, Mangels, 

 Sugar Beet, 

 {a) Sampling. 



This should be done from at least a dozen roots, 

 cones being removed from each, or else a vertical section, 

 half an inch wide, passing through the centre. 



{b) Water. 



Thin slices from the mixed cones or sections are 



