Page:Popular Science Monthly Volume 81.djvu/36

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30
THE POPULAR SCIENCE MONTHLY
 

PSM V81 D036 Pier at brighton trinidad.png

Photo. W. H. Rau, Philadelphia.

Pier at Brighton, Trinidad, from Shore.
 

It consists, like all the other more or less solid native bitumens, of components of two different classes, which can be separated by solvents;

 

PSM V81 D036 Pitch cones at the edge of trinidad lake.png

Photo, C. R. Toothaker, Phila. Commercial Museum.

Pitch Cones on Edge of Trinidad Lake.