TABLE NO. 2.--ANALYSIS OF AVERAGES. GRADE OF EXCELLENCE FROM 8 TO 10 =====+=============================================+======= Plate| Pigment |Average -----+---------------------------------------------+------- 34 | American vermilion (basic chromate of lead) | 10.0 41 | Chrome green | 9.8 49 | Lead and zinc chromate | 9.7 39 | Zinc chromate | 9.5 40 | Zinc and barium chromate | 9.5 51 | Black oxide of iron | 9.5 4 | Sublimed white lead | 9.0 44 | Prussian blue | 9.0 5 | Sublimed blue lead | 8.8 20 | Willow charcoal | 8.8 222 | Composite paint | 8.8 45 | Prussian blue | 8.5 111 | Composite formula | 8.5 9 | Orange mineral | 8.3 10 | Red lead | 8.3 555 | Composite paint | 8.2 12 | Bright red oxide of iron | 8.1 2000 | 1 coat zinc chromate; 1 coat iron oxide | 8.1 14 | Venetian red | 8.0 888 | Composite paint | 8.0 =====+=============================================+======= =Comparison of Results.= It is of interest to compare with Table 2 of the above report, Table 2 of the 1910 report of Committee U of the American Society for Testing Materials. Both charts show the highly inhibitive pigments to be in the lead. COMMITTEE U REPORT 1910 TABLE II.--ANALYSIS OF AVERAGES. GRADE OF EXCELLENCE FROM 8 TO 10 (_Only resistance to corrosion was considered, and only pigments which were common to both tests are included_)