Bacteria in wall paper, 256 Barium Sulphate, 55 Barytes, 55 and Silica Paints in Pittsburg tests, 172 Basic Carbonate-White Lead, 42 Benzine, 20 Benzol, 20 Blanc Fixe, 60 Blue Lead, Sublimed, 47 Blue Paint for concrete wall, formula, 215 Blue paints in Pittsburg tests, 142 Boiled Linseed Oil, 2 Driers in, 28 Bone Black, 66 Calcium Carbonate, 60 Calcium Sulphate, 60 Carbon Black, 66 Cause of rust in steel work, 220 Chalking test for laboratory, 149 Checking and cracking in Pittsburg tests, 166 Checking, in Atlantic City tests, 122 China Clay, 62 Chrome Green, 66 Chrome Yellow, 64 Coatings for cement and concrete, 214 Colored formulas in North Dakota tests, 190 Colors, report of, in Pittsburg tests, 139 Combination formulas in inhibitive paints, 231 Composite formulas in North Dakota tests, 190 in Pittsburg tests, 142 Composition of paints, in steel test, 232 Conclusion from Pittsburg tests, 144 Concrete primer formula, 218 Constants of Pine Oil, 18 Pure Gum Turpentine, 19 Co-operative tests of Driers, 29-41 Corn Oil, 16 Cottonseed Oil, 15