38 BULLETIN 373, U. S. DEPARTMENT OF AGRICULTURE. 
missible under the specifications, the test shall be disqualified and another 
made. 
Item 12. The scales. — The scales must have a capacity of not less than 300 
pounds and must be sensitive to one-half of an ounce and must be tested by a 
standard test weight at intervals of not less than every 10 tests. 
Item 13. The results. — The loss shall be calculated in percentage of the 
initial weight of the brick composing the charge. In weighing the rattled brick 
any piece weighing less than 1 pound shall be rejected. 
Item 14. The records. — A complete and continuous record shall be kept of 
the operation of all rattlers working under these specifications. This record 
shall contain the following data concerning each test made : 
1. The name of the person, firm, or corporation furnishing each sample tested. 
2. The name of the maker of the brick represented in each sample tested. 
3. The name of the street or contract which the sample represented. 
4. The brands or marks upon the bricks by which they were identified. 
5. The number of bricks furnished. 
6. The date on which they were received for test. 
7. The date on which they were tested. 
8. The drying treatment given before testing, if any. 
9. The length, breadth, and thickness of the bricks. 
10. The collective weight of the 10 large spherical shot used in making the 
test at the time of their last standardization. 
11. The number and collective weight of the small spherical shot used in 
making the test at the time of their last standardization. 
12. The total weight of the shot charge after its last standardization. 
13. Certificate of the operator that he examined the condition of the machine 
as to staves, liners, and any other parts affecting the barrel and found them 
right at the beginning of the test. 
14. Certificate of the operator of the number of charges tested since the last 
standardization of shot charge. 
15. The time of the beginning and ending of each test and the number of 
revolutions made by the barrel during the test as shown by the indicator. 
16. Certificate of the operator as to number of stops and starts made in each 
test. 
17. The initial collective weight of the 10 brick composing the charge and 
their collective weight after rattling. 
18. The loss calculated in per cents of the initial weight ; and the calculation 
itself. 
19. The number of broken brick and remarks upon the portions which were 
included in the final weighing. 
20. General remarks upon the test and any irregularities occurring in its 
execution. 
21. The date upon which the test was made. 
22. The location of the rattler and name of the owner. 
23. The certificate of the operator that the test was made under specifications 
of the American Society for Testing Materials and that the record is a true 
record. 
24. The signature of the operator or person responsible for the test. 
25. The serial number of the test. 
In event of more than one copy of the record of any test being required, they 
may be furnished on separate sheets and marked duplicates, but the original 
record shall always be preserved intact and complete. 
