Scientific American Supplement, May 5, 1917 by N.C. Nelson, William Porthouse, Perey Collins, Various - 1917: Long Rope Ladders Italy World War I

1917. soft. Original Edition Printing Location: New York Date and Numbering: May 5, 1917, Vol. LXXXIII, No. 2157 Size and Page Count: 10.5"" X 15.5"" Tall, app. 16 pages Condition: Good, Corners sharp, pages clear, library stamp on cover, slight foxing on inside of first page, one page detached, disbound issue. Illustrations Information: Small illustrations or sketches in most pages, many photographs, front cover illustration ""Long Rope Ladders Leading to Observation Stations on the Heights"" -------An excellent opportunity for the collector, researcher, or historian------ Contains:

Human Biology and War: Man And Animals Conform to Different Laws
Surgery for Injured Trees
Mammoth Cave by by N.C. Nelson
How Far to Go in Cavity Filling Initiation for Explosions: The Various Agencies and Methods Employed for Igniting Powders Sand Devastation: How the Dunes Advance and How Their Movement is Checked by Perey Collins
Astronomical Drawings: Practical Suggestions for Recording Astronomical Observations by William Porthouse
A One-Quarter Horse-Power Single-Phase Induction Motor-II: Complete Details and Instructions for Building Precision in Chemical Weighing-I Where Italy is Fighting and more articles!