A faint buzz above the ceiling witnessed that petrography, too, was active.
"Ann Veronica" by H. G. Wells
Contributions to Mineralogy and Petrography from the Laboratories of the Sheffield Scientific School.
"Mr. Edward Arnold's New and Popular Books, December, 1901"
The publication of this scheme may be said to mark the beginning of scientific petrography.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6" by Various
Petrography and laboratory psychology were among the new sciences fostered by the new university.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 4" by Various