It was in China that a shattering innovation was developed which was to change the whole way of warfare. In a Chinese book of the 11th century there is a formula for an incendiary mixture which contains, among other ingredients, charcoal, saltpetre and sulphur. These three chemicals are the component parts of gunpowder. By the 13th century the Chinese had come to appreciate the explosive qualities of gunpowder and were using a very crude form of firearm. It was no more than a strengthened bamboo tube which may have discharged a clay bullet, but this was the prototype of the 16-inch naval gun or the modern aircraft's battery of cannon.
This item is in Fair condition. There is coloring and some marking of pages. There are marks, tears, and fading of the dust jacket. There is shelf wear. As usual, photos are of the item that you will receive.