"Bed rock" Quotes from Famous Books
 ... composed of a mass of masonry laid in cement resting on bed rock, which occurs at a depth of 11 meters, an anvil block of cast iron, and a filling-in of oak timber designed to diminish by its elasticity the vibrations resulting from the blows of the hammer. The masonry foundation presents a cube ...
— Scientific American Supplement, No. 488, May 9, 1885 • Various |
