of 32 leaves of this tree was used for 4 Ibs. of milk. In this 

 connection it may be mentioned that Bengal gowdlds use 

 the juice of sheord (Trophis aspera) for getting quick curdlirfg 

 of milk. Experiments in cheese-making by the addition of 

 a vegetable ferment, conducted under proper conditions of 

 temperature &c., are likely to important results. 



1,140. We may conclude this Chapter by giving a few 

 extracts from Mr. B. C. Basu's Report on the Indian Dairy 

 Commission, dated igth February 1890. 



" As the principles which underlie the separation of 

 cream by centrifugal force, are not generally known in this 

 country, the following description of the " Baby" and the 

 "Windsor 1 ' may not be out of place. The principal part of 

 the C( Baby" separator is the cylinder, made of the best 

 Swedish steel, placed inside an iron-frame. This cylinder is 

 spun like a top at the rate of 6,000 revolutions per minute by 

 40 revolutions of the handle, this high speed being attained 

 through the medium of a system of axles and toothed wheels. 

 The milk which flows into the cylinder from a can placed 

 above it is thus made to revolve at an enormous speed, and is 

 at x>nce separated into cream and skim-milk in accordance 

 with the law of dynamics that bodies revolving in a circle fly, 

 or, if restrained, tend to fly away from the centre ; and that 

 of two bodies thus revolving, the heavier flies further from the 

 centre than the lighter. Thus, if we put a number of leaden 

 and wooden balls into a cup and give a rotating motion to 

 the latter, the leaden balls will stick close to the inside of 

 the cup, and the wooden ones will collect on the inside of the 

 leaden balls. Now of skim-milk and cream which are the 

 two component parts into which milk naturally separates, the 

 former is considerably heavier than the latter. Thus when 

 milk is made to revolve rapidly the skim-milk being heavier 

 flies further from the centre than the cream, and as both 

 are restrained by the sides of the cylinder, they form two 

 distinct layers inside the cylinder, one within the other. 



