BY H. S. HALCRO WARDLAW. 



849 



these values will, therefore, be considered separately in greater 

 detail. 



In the following diagram (Text-fig. 2), the ogive of the per- 

 centages of fat in the present samples of milk is given. The 

 corresponding derived or frequency curve is shown by a discon- 

 tinuous line. The percentages of fat are plotted as abscissae. 

 The ordinates represent the numbers of results, out of a total of 

 109, which occur at, or below, given values of the percentage. 

 The circles correspond to the actual numbers of results. The 

 ordinates refer only to the ogive, and not to the frequency 



Text-fig. 2 

 Ogiv^e and frequency curve of concentrations of fat in cows" milk. Ab- 

 scissae: percentages of fat. Ordinates: numbers of results; ordinates 

 refer only to ogive 



curve. The latter has been inserted only to render more obvious 

 the information contained in the ogive. The heavy line at 3*2% 

 indicates the position of the standard for the percentage of fat 

 in New South Wales. The values of this standard in the other 

 Australian States are as follows: Victoria, 3'5; Queensland, 3-3; 

 South Australia, 3*25; Western Australia, 3-2%. The standard 

 percentage of fat in England is 3-0. 



61 



