Page:Popular Science Monthly Volume 88.djvu/189

 Features of the March Popular Science Monthly

Above the plank floor which now consti- tutes Broadway, in jront of the Metropolitan Opera House, are silks and jewels and glitter- ing lights; below it in half darkness a squad of laborers in khaki overalls, stained with sweated mud, are risking their lives to build another subumy.

In the March number the unseen under- ground activities of New York are revealed in an absorbing article and in a dozen or more interesting pictures — done in the Popular Science Monthly way — to show exactly how sewer pipes are being rearranged, how rock is being blasted, how a tunnel is being sunk beneath the Harlem River.

Why did England declare cotton contra- band of war ? You ivill find out if you ivill read in the March number an article which traces cotton from the time that it is in the boll on some southern plantation, to the time when it is placed in the breech of a As^-centi- meter gun in the form of smokeless powder of terrific energy.

Of course there are other articles equally worth reading. But how can we enumerate three hundred subjects in two hundred words?

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