bamboo strengthened on the outside with a binding of split cane.
Having reached the point of charging composition into a tube, that is to say confining it, a more or less violent explosion was likely or rather certain to follow during the course of the experiments, which might suggest the use of a tube as a means of discharging a projectile. This would lead to research in the direction of the best composition for the purpose and the evolution of gunpowder.
It must be remembered that the constituents of gunpowder must be present in approximately exact proportion, whereas with primitive pyrotechnic compositions, if the ingredients saltpetre and charcoal are present, it is almost impossible to fail in getting some result.
The above suggestion must not be taken literally as a statement of fact, but rather as an attempt on the part of the writer to trace the stages by which pyrotechnic and explosive compositions came to be evolved.
If one disabuses one's mind of the curiously widespread belief that all fireworks are composed chiefly of gunpowder, and that without the invention of gunpower fireworks could not have been constructed, it seems far more likely that pyrotechny is based on the discovery of the assistance given to combustion by saltpetre, than on the discovery of gunpowder.
