. The Popular science monthly . Photo, C. R. Toothaker, Phila. Commercial with Crude Asphalt in Buckets. 3° THE POPULAR SCIENCE MONTHLY rjTSSJCH-llifWRRHW. Photo. W. H. Rau, at Brighton, Trinidad, from Shore. It consists, like all the other more or less solid native bitumens, ofcomponents of two different classes, which can be separated by solvents; .*>-•?- ? IHii IK B V * -,

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