62 J. W. FLUDE 
Favorable locations can be found with little trouble. About the only 
conditions are that the chosen spot should not have high grass and, 
according to the Standard Table of Distances, it should be not less 
than 1,300 feet from habitations, 780 feet from any railway, and 390 
feet from any public highway. 

A ground connection makes it a veritable lightning rod and elimi- 
nates this hazard. In addition, it can be securely locked to prevent 
theft, can be fairly well ventilated, is weatherproof, and, finally, is 
sturdy enough to stop ordinary lead bullets. 
At this time there are two types of portable magazines in use. One 
is mounted on a two- and the other on a four-wheel chassis. The 

dimensions of these magazines differ slightly, and a good size would 
be 41 inches wide, 80 inches long and 40 inches high to the eaves. It 
should have a gable roof with about a 4 inch rise. 
All surfaces are of 10-gauge hot rolled steel, blue annealed. The 
floor frames are 2X24 inch thick angle iron. The posts and top 
framing are 14 X13 X} inch thick angle iron. 
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