How we are sheltered; a geographical reader (1906)
Chamberlain, James Franklin, 1869-1943 · New York, The Macmillan company; London, Macmillan & co.,ltd. · leaf 154
Fig. 53. — Marble Quarry at Proctor, Vermont. i HOUSES BUILT OF STOXE 137 on each side of which they cut a groove aboutone inch wide. Sometimes these grooves arecut to a depth of ten feet. The saws that do the cutting have no teeth.They are of soft iron or wire driven back and forth … Courtesy oftlie Vermont MarhlP Company. Fig. 54. — Marble Quarry at West Rutland, Vermont. by. machinery. Grains of sand are washed intothe cut to take the place of sawteeth. Thesand really does the cutting; the saws only moveit to and fro. The blocks are loosened by drivingwedges into holes bored…
Dwellings · Readers
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