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MAJOR J. H. MANSELL: INVESTIGATION OF 



full of great difficulties and which I sought to solve for a long time at the expense ot 

 most laborious arithmetical calculations before I arrived at the solution which I now 

 put forward. 



Certain phenomena in connection with the burning of M.D.T. have always been 

 apparent and indicated the lines on which I must work. If a stick of M.D.T. be 



Time - .Second*. 

 Fig. 6. Time rise of pressure Tube M.D. at 80 F. 



ignited in the open air the burning does not proceed regularly, but is accompanied by 

 a succession of reports, the tube at the same time being projected about. The action, 

 in fact, is very similar to that of the " cracker " firework. 



Now these explosions and jumps are due to the formation of gas inside the tube at 



