The temperature marked
by the thermometer was noted as the _initial temperature_, the
cartridge case containing the explosive was inserted in the bath, and
the temperature quickly raised until the explosive flashed off or
exploded, when the temperature marked by the thermometer was again
noted as the _firing point_. The tables given show the results of
about six experiments with each explosive. The initial temperatures
range from 65 deg. to 280 deg. C. in some cases, but as the firing points
remained fairly constant, only the extremes of the latter are quoted
in the following table:
--------------------------------+-----------------------
Description of Explosive. | Firing Point in deg. C.
--------------------------------+-----------------------
Compressed military gun-cotton. | 186 - 201
Air-dried military gun-cotton. | 179 - 186
" " " | 186 - 189
" " " | 137 - 139
" " " | 154 - 161
Gun-cotton dried at 65 deg. C. | 136 - 141
Air-dried collodion gun-cotton. | 186 - 191
" " " | 197 - 199
" " " | 193 - 195
Air-dried gun-cotton.
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