18 BULLETIN 846, U. S. DEPARTMENT OF AGRICULTURE. 
EXAMINATION GF SAMPLES. 
After the samples had been prepared, frozen, and held in cold 
storage for several weeks they were examined by three bacteriologists 
and five chemists. Only one determination of each constituent was 
made by each chemist, for the reason that four or five chemists per- 
formed each determination, averages of which give very reliable 
results. All bacteriological examinations were made in duplicate. 
RESULTS OF EXAMINATION CF SAMPLES. 
The results of the examination of the samples are given in Tables 
8 to 23. For ease of comparison the histories of the samples and the 
analytical results have been grouped in the same table. Movyeover, 
all of the samples of the same type have been gathered into each - 
table, and averages have been calculated. These tables are self- 
explanatory, needing but the few additional comments which are 
given on pages 55 to 59. Throughout, the use of terms as given in 
U. S. Department of Agriculture Bulletin 224, page 21, has been 
followed. 
