COFFEE BOUGHT IN THE OPEN MARKET. 



921 



treated with oil will float. The cold-water test should always be made, 

 since valuable indications as to the purity of the samples may usually 

 be obtained. A low percentage of ash indicates an adulterated sample. 

 The microscope must be employed for the final identifications of the 

 constituents of the sample. 



REPORT OF EXAMINATION OF SAMPLES BOUGHT IN THE OPEN MARKET. 



The samples included in the following report were purchased in stores 

 ranging from the best class to the poorest. The grades of coffee fairly 

 represent the market: 



Description of samples examined. 



Date. 



1890. 

 June 20 



