Statement as to the explosibility of wet guncotton through cumulative detonation by Hermann Johann Phillipp Sprengel Discusses the explosibility of guncotton noting that the first information regarding the successful detonation of wet guncotton is contained in 'Philosophical Transactions [of the Royal Society]' 1874, volume 164, page 368, by Sir Frederick Augustus Abel. Notes the prior communication to the Chemical Society of London as described in their journal volume 26, page 806, of Sprengel's cumulative detonation, and mentions explosions carried out by Mr E O Brown, Sprengel's assistant. 16 November 1892