REPORT OF CHEMICAL LABORATORY 



215 



by punishing and registering the milk vendors, cruelly put a stop to such sources of 

 income, would seem to be doubtful. One of these worthies, when accused of carrying her 

 worship of the Nile to undue lengths, naively replied " Malum ! I make more money 

 like that." 



Systematic examinations of the milk of individual cows and goats, as well as of the 

 mixed milk of herds of each of these, have been begun, and it is proposed to continue them 

 in order to accumulate data which will enable one to establish a standard or standards, 

 applicable to all seasons of the year. The fact that the milk supply is derived partly from 

 goats and partly from cows introduces a difficulty, since the " solids not fat," of goat's 

 milk is, as a rule, at least in other countries, considerably higher than that of cow's milk. 

 So far as the present results go the milk from Khartoum cows appears to be quite equal to 

 that from goats ; but it is not anticipated, when all the results are in, that these high 

 proportions will be maintained. 



The following are some of the results which have been obtained from the examination of 

 milk of individual animals : — 



Analyses of 

 pure milks 



Samples Nos. 280, 278 and 279 were collected by ]\Ir. W. A. Davie ; the remainder by 

 Mr. Newlove. 



One sample from a cow brought north from Ivo<lok, suffering- from trpyanosomiasis, but 

 since apparently cured, gave the following exceptionally high figures. The yield of milk 

 was not noted. The cow had calved eight munths previously. 



Total Solids . . . . . . . . 21-5 per cent. 



Fat 11-2 



Solids not fat lO'S 



Dried Milks 



Milk powders, prepared by evaporating milks to dryness on a revolving cylinder, Otied milks 

 heated to 230° F. have been on the market for the last two years or more. Milk in this 

 form would appear to be exceptionally suited to use in the Sudan, especially by those 

 journeying in the interior where ordinary milk is frequently not obtainable. As a result of 

 the heat used in manufacture these powders have' been found to be bacteriologically sterile, 

 and samples kept in the laboratory for five months at a temperature of from 85° to 98° were 

 still found to be in fairly good condition. 



