CONTROL SOCIETIES 121 



different kinds of food to a common unit. If one pound of 

 corn be taken as the unit, then one food unit of another kind 

 of food would be so much of the food as would replace one 

 pound of corn in the fodder of a cow without affecting the yield 

 of milk or the weight of the cow. If one pound of palm kernel 

 cake, for instance, has the same feeding value as one pound 

 of corn, then one pound of palm kernel cake is equivalent to 

 one food unit. If turnips contain 8 per cent, of soHd matter, 

 and if one pound of this has the same feeding value as one 

 pound of corn, then 12 J lbs. of turnips make up one food unit, 

 and so on. At a meeting of a joint committee, appointed by 

 the Danish Provincial Associations of Control Societies, with 

 representatives of Norwegian and Swedish control societies, 

 held in the autumn of 1915, an agreement was arrived at by 

 which the same Food Unit and the same method of calculation 

 have been accepted by all Scandinavian control societies. 

 The meeting agreed on the following four points : — 



1 . The Food Unit is to be one kilogram of barley. 



2. Equivalent figures for the various kinds of " concen- 

 trates " (foods such as corn, mill offals and oilcakes) to be 

 fixed according to results of feeding experiments. 



3. The relative value (number of food units) of roots to be 

 calculated from their percentage of " total solids " ascertained 

 by analysis. 



4. Food units of grass to be calculated from the yield of 

 milk and the weight of the cows ; all feeding stuffs given in 

 addition to the grass to be deducted at their full value (number 

 of food units). 



In agreement herewith the Danish Control Societies have 

 drawn up the following scale. One food unit shall be one 

 kilogram of barley, and the following quantities of foodstuffs 

 shall be considered equivalent to one food unit : — 



. A. " Concentrates." 



1 kg.i of wheat, rye, maize, peas, vetches or beans. 

 0*8 kg. of the best kind of decorticated cotton-seed cake, ground 

 nut cake, sesame cake, soya bean cake or soya bean meal. 



1 Kg. = kilogram =2-2 lbs. 



