which is not or ‘‘sub-subway tracks.” The sides of the structure are laid in a series of the logs are cut into bolts, boiled, and then converted always directly on the center line of the street. into veneers the thickness of the materials used in the arches with vertical axes each of six feet… … through a machine which cuts the veneer to the re- tunnel axis. At each springing line a steel column, Boylston Street, beginning on the margin of the Pub- a 15 inch I beam, is bedded in the masonry, its quired shape and size, marks the folds, folds them, and lie Garden, crossing Charles Street…
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