en the per- bursting limit of the grains, and which, coacting stand how the disruption er crushing into fine frag- with their disruption, raised the pressure to a tremen- ments of powder grains in a gun can cause the pres- forations and between the outer circle of perforations and the… … one inch to one inch and one-half, and mul- portion. If we take a similar rod or grain tiperforated in the manner shown, is a much about 8 inches long and ignite it in a similar preferable form. The burning thicknesses manner, we shall find that it will not ex- between the perforations should be…
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