— -seed Oil, Bleaching of, [459]

Porcelain, [601]

— How to Tell Pottery, [173]

— Letters, Cement for, [19]

— Production of Luster Colors, [172]

Portland Cement, [162]

— Size Over, [30]

Positive Colors, [556]

Postal Cards, How to Make, [537]

— — How to Make Sensitized, [539]