A little observation reveals that many building stones, especially sandstones, acquire an unfavorable reputation by lack of care in not rejecting the ... The crushing weight of the marble, as determined by the board above mentioned, is 517 tons per square foot. ... Average weight per cubic foot of masonry in several divisions.
|Title||:||10th census of the United States, 1880|
|Author||:||United States. Census Office. 10th census, 1880, Stephen Farnum Peckham, Joseph Dame Weeks, Norman Ross Publishing|