About
Title
Microscopic sections of Brownstones of Pennsylvania
Subject
- Civil engineering--Materials
- Brownstone
- Lantern slides
Description
Glass lantern slide of eight circular illustrations of various types of brownstones. Reproduction from "The building materials of Pennsylvania. I.--Brownstones" by Thomas C. Hopkins. Harrisburg, Pa., 1897. Text on plate reads: "Brownstones of Pennsylvania. Plate 1. Microscopic sections of different brownstones enlarged 44 diameters : No. 1 Lumberville feldspathic sandstone-feldspar and quartz and quartz cement…" The caption continues but is too faint to read. No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950 at the Wagner Free Institute of Science, Philadelphia, Pa.
Creator
Wagner Free Institute of Science
Location Covered
Pennsylvania
Original Format
Lantern Slides
Contact
Wagner Free Institute of Science Library & Archives. 1700 W Montgomery Ave. Philadelphia, PA 19121. Contact the Library at 215-763-6529 x12 or library@wagnerfreeinstitute.org
Contributing Institution
Wagner Free Institute of Science
Sponsorship
This Digital Object is provided in a collection that is included in POWER Library: Pennsylvania Photos and Documents, which is funded by the Office of Commonwealth Libraries of Pennsylvania/Pennsylvania Department of Education.
