1904.] Coating Cheese with Paraffin Wax. 169 



majority of cases to induce secretion of milk poorer in fat. 

 When cows are at pasture the first effect of a fall of rain is 

 probably — with most cows — to cause secretion of richer milk 

 (especially in the case of morning milk yielded after a rainy night), 

 this being perhaps attributable mainly to the increased succu- 

 lence of the grass. The influences are only of a very temporary 

 nature, the return to normal conditions being fairly rapid with 

 a continuance of fairly uniform climatic conditions. (8) The 

 average percentage of fat in the morning milk yielded by 

 the Garforth herd during the summer months was on most 

 days below 3 per cent. The herd is not peculiar in this 

 respect, as similar results have been obtained with other 

 herds in different parts of the country. 



The United States Department of Agriculture are investi- 

 gating the keeping qualities of butter, and in Bulletin No. 57 of 

 the Bureau of Animal Industry they have 



Keeping Quality i ssuec i a report upon canned butter. Such 

 of Canned Butter. , " , p , r , 



butter is put up when perfectly fresh, more 



especially if intended for use in warm climates, into small cans, 

 which are hermetically sealed. Nevertheless, the butter does 

 not keep indefinitely. This is said to be due to certain yeasts, 

 which may produce a slow development of acidity under par- 

 ticular circumstances, and to the action of an enzyme, although 

 the aerobic forms which cause rapid increase of acidity cannot 

 develope. The conclusion is that the milk or cream should 

 first be pasteurised, as it is not sufficient to seal the cans her- 

 metically in order to kill these yeasts. 



The following results of experiments with cheese kept under 

 ordinary conditions in a Melbourne ware- 

 Coating' Cheese house have recently been published in the 

 with Paraffin Wax. . ■ , , . .... . f ' \ T . 



journal of Agriculture 01 Victoria: — rour 



small cheeses, weighing 46J lb., were coated with paraffin wax on 

 October 8th, 1903, and four duplicates of the same weight were left 



