3 pages, about 8 1/2" x 11" glossy soft-cover in full color. New re-print restored and digitally enhanced from a nice original. Printed on high quality 24# 97 bright acid free paper. Not Illustrated.

Contents - Index:

• Pages: 3

• Experiments with Percussion Caps
• An Extract from "The Field" 1891
• Analysis of Different Caps
• Eleys less sensitive than Kynoch
• Energy, Anvils