488 MEAT AND MEAT PRODUCTS , 
CASE A.—RESULTS OF B. COLI TESTS IN DILUTIONS INDICATED 
Oysters. 1.0 cc. 0.1 ¢.¢, 0.01Fc.c. Numerical Value, 
1 -- + | 0 10 
2 + + 0 10 
3 + + 0 10 
4 -+ 0 0 10 (not 1) 
5 + +- | 10 (not 100) 
— 
50 = Rating 
CASE B.—RESULTS OF B. COLI TESTS IN DILUTIONS INDICATED 
Oysters. 1.0 c.e. | 0.1 c.c. 0.01 e.c, Numerical Value. 
1 + + + 10 (not 100) 
2 + “- + 10 (not 100) 
3 + 0 0 1 
4 0 0 0 1 (not 0) 
5 0 0 0 1 (not 0) 
23 = Rating 
aaa’ 
CASE C.—RESULTS OF B. COLI TESTS IN DILUTIONS INDICATED 
"Oysters. 1.0 e.c. 0.1 c.c. 0.01 ¢.c. Numerical Value. 
NTE | ATONE tiRiphOANRNTANTCNNNT | <HULLNEIRH/ testis hiiTNANeyASSCRENSAUMIN AISA | Seireresitfinth cogs qrmen/-7Ri/ISy-Werieiirraottimaripr iris yrMtaraan 
10 (not 100) 
10 (not 1) 
a 
140 = Rating 
+ 0 
+ 0 
+ + 100 
+ + 
0 0 
Oysters Removed from the Shell (Opened or Shucked Stock). 
Except as hereinafter stated, all the procedures and requirements for 
the examination of opened oysters, i.e., shucked stock, shall be those 
specified for the examination of oysters in the shell. 
Selection and Preparation of Sample. The stock in the container 
from which the sample is to be taken shall be thoroughly mixed, and 
one or more wide-mouthed sterile jars of a total capacity of one quart 
shall be each half filled with the sample by means of a clean ladle or 
other instrument sterilized by flaming alcohol. The jar or jars shall be 
so sealed as to exclude all possibility of contamination from without. 
