Entitled: "Ein wahres Probiertes und Pracktisches geschriebenes Feuerbuch, 1607." This work was intended to be a practical manual on the uses of explosives for defense purposes. Includes 31 colored illustrations. Followed by a treatise for master gunners. Incendiary weapons, incendiary devices or incendiary bombs are weapons designed to start fires or destroy sensitive equipment using fire (and sometimes used as anti-personnel weaponry), that use materials such as napalm, thermite, chlorine trifluoride, or white phosphorus. Though colloquially often known as bombs, they are not explosives but in fact are designed to slow the process of chemical reactions and use ignition rather than detonation to start and or maintain the reaction. Though early thermal weapons, such as Greek fire, have existed since ancient times, the first widely used explosive in warfare and mining was black powder, invented in 9th century China. This material was sensitive to water, and it produced dark smoke. The first useful explosive stronger than black powder was nitroglycerin, developed in 1847.