^ 
BULLETIN 9±9. TJ. S. DEPARTMENT OF AGRICULTURE. 
(Name and location oflabora tory . ^ 
Report ox Sample of Portland Cement. 
Laboratory Xo. 
Brand 
192. 
(Date reported.) 
Identification marks 
Submitted by Title 
Sampled 192 . . . Received 
Sampled from 
Quantity represented 
Manufactured by 
Location used or to be used 
Examined for 
Address. 
TEST RESULTS. 
Chemical tests: 
Loss on ignition, per cent 
Insoluble residue, per cent 
Sulphuric anhydride S0 3 . per cent. 
Magnesia MgO' . per cent 
Physical tests: 
Specific gravity 
Per cent retained on 200-mesh sieve . 
Steam test 
Gillmore 
needle. 
Initial set or 
Final set or 
Tensile strength 1 : 3 Ottawa sand : 
7 dars. 
Vicat 
needle. 
28 davs. 
, 192. . 
Remarks: 
Average: 
Average: 
Respectfully submitted. 
(Title). 
