10 



N. H. Agr. Experiment Station 



[Bulletin 291 



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Figure 2. The above scatter diagram of bacteria counts shows the proportional 

 distribution of these counts according to the scores given thirty-one dairymen by the 

 inspector for the Boston Board of Health during 1932. Apparently there is very little 

 correlation between these scores and bacteria counts, for a low or a high count is just 

 as likely to occur with a low as with a high score. 



