Gun Cotton and Gunpowder

1857 Scientific American  
�titnt£ nnb �rt � titntifit �mtritan+ contain about half a gallon. As near its center as posslble, a tin tube, L, two inches in diameter, is soldered to its top only , it has ,-:-0=== == == == == == =-several holes punched in it near its upper end,
doi:10.1038/scientificamerican01311857-168 fatcat:vccyd6vo5nc4xelvw7du6fdlgi