Experiment 37. If a small quantity of ammoniacal nitrate of copper be wrapped in paper, or in a piece of tin foil, and struck with a hammer, a detonation will ensue.
Experiment 38. If a small portion of arsenic and chlorate of potassa be mixed, and smartly struck, a flame will be produced, accompanied with an explosion; or,
Experiment 39. If the same mixture be touched with a lighted match, it will burn with considerable rapidity; or,
Experiment 40. If it be thrown into concentrated sulphuric acid, at the instant of contact, a flame will rise into the air like a flash of lightning.
Experiment 41. Heat a portion of deutoxide of chlorine: when the temperature arrives at 212°, an explosion will take place, and chlorine and oxygen be evolved.
Experiment 42. If prussine gas, otherwise called cyanogen, or carburet of azote, be mixed with atmospheric air, in the proportion of about one to four in volume, and the electric spark made to pass through the mixture; a violent detonation will result, leaving a mixture of carbonic acid gas and azotic gas.
Experiment 43. If a mixture of equal parts of nitrate of potassa, and titanium, be thrown into a red-hot crucible, detonation will follow.
Experiment 44. Melt some nitrate of potassa in a crucible, and bring it to the state of ignition: now throw in a small quantity of pulverized zinc, and a very violent detonation will take place.
Experiment 45. If one part of zinc filings and two parts of dry arsenic acid be distilled in a retort, or exposed to heat in a crucible, the moment it becomes red, a detonation will be produced.
Experiment 46. If a few drops of deutoxide of hydrogen, or the oxygenized water of Thenard, be let fall on dry oxide of silver, a violent action will follow, accompanied with an explosion. Several other oxides have the same effect.