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PROCEEDINGS OF THE AMERICAN ACADEMY 



No specimen of pure milk that I have ever examined, or that I can 

 find any records of, fails to the extent of fifteen per cent of indicated 

 adulteration in all three of these particulars. And I may add still 

 further, although the specific gravity of a milk is not regarded as a 

 reliable indication of its purity, that, in every case of adulterated milk 

 I have met with, the inspector was justified in his seizure, if the sp. 

 gr. fell below 1.026. 



The mistake is sometimes made of con.sidering the estimation of 

 added water as an absolute determination, entitled to the same weight 

 as the actual analysis. But it must be evident to any one. on a few 

 moments' reflection, that these estimations cannot be so regarded, and 

 that they are only approximsitions, whose chief value is to show the 

 courts how much the milk falls below a milk of fair quality ; and, 

 when taken in connection with the fact that pure milk never falls so 

 far below this standard, tiiey enable the court to judge intelligently 

 whether there are fair grounds for considering the sample to be 

 adulterated. 



Boston, Nov. 27, 1876. 



APPENDIX. 



It having been suggested that the first run of the milk of a cow was 

 much poorer than the strippings. and therefore a milkman, who was 

 desirous of proving that his milk was unwatered, might procure an 

 analysis of such a specimen, the foIlo^^ing experiment was tried : — 



Analysis No. XXXI V., cow " Georgiana," right forward teat. Even- 



