Wagner Free Institute of Science - Engineering 1: The Materials of Engineering Construction

Glass lantern slide of an illustration of a Riehlé Testing Machine with 300,000 pounds capacity. Label: Samuel T. Wagner stamp and handwritten label: "300,000# Riehle Testing Mach. 1893." Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of an illustration with the caption, "Fig. 14 - Section of wood showing position of the grain at base of a limb. P, pith of both stem and limb; 1-7, seven yearly layers of wood; a, b, knot or basal part of a limb which lived four years, then died and broke off near the stem, leaving the part to the left of a, b, a "sound" knot, the part to the right a "dead" knot, which would soon be entirely covered by the growing stem." Reproduced from “Timber: an elementary discussion of the characteristics and properties of wood” by Filibert Roth. Washington, D.C.: Dept. of Agriculture, Forestry Division, 1895. Bulletin (United States. Division of Forestry) no. 10. No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of an illustration of a vertical section through two of Siemens Gas-producers." Reproduced from a book. No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of an illustration of a cross section of the Siemens Steel-Melting Furnace. Reproduced from a book. No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of the interior of an unidentified mill building. Label: Samuel T. Wagner stamp. Not titled. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of the Swedeland Furnaces with piles of ore stock around the mill. Photograph by Samuel T. Wagner. Label: Samuel T. Wagner stamp and handwritten title: "Swedeland Furnaces, Pa. Oct. 1893" Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

1895 syllabus for the course, "The Materials of Engineering Construction." Materials was the first in a series of four courses in Civil Engineering, developed by Samuel Tobias Wagner and taught at the Wagner Free Institute of Science between 1893 and 1950.

Glass lantern slide of an illustration with the caption, "Fig. 2." The cross section labels the "Shell", the "Wood", and the "Soft Body of Teredo." (A Teredo is a Naval Shipworm - one of several genera of wood-boring bivalve shipworms.) Reproduced from “Marine Wood-Borers” by Charles H. Snow. (Proceedings of the American Society of Civil Engineers, Vol 24, 1898). No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of an unidentified piece of machinery with a man standing beside it. No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.

Glass lantern slide of a large concave metal disc suspended by a large hook. It is roughly 5 times the height of the man next to it. No label on slide. Used to illustrate the course "Materials of Engineering Construction" which was taught between 1893-1950.