a fact, but only supposed it to be so from accumulated 

 experience. 



" K.S.G.," although a 33 grain powder, contains only 

 6^ of solid matter, which places it as much in front of 

 the 33 grain explosives in general use as they are in front 

 of 42 grain powders. 



No component of a cartridge is more difficult to make 

 satisfactorily, or has more bearing on the firing results to 

 be obtained, than the powder. 



The most important component of a powder is the 

 nitro cotton. On the purity, and consequently stability, of 

 the nitro cotton depends the regularity, the good shooting, 

 the freedom from changes due to climatic differences, 

 and the good keeping qualities of the powder. 



Kynoch Limited make their own nitro cotton, and 

 thus are ensured against trying to make a good powder 

 out of a bad cotton. 



PROOF 

 Every batch of nitro cotton when made is tested — 

 {a) To ascertain if it has the coiTect degree of solu- 

 bility in the solvent employed. 



(^) To ascertain if it is properly nitrated, a test known 



as the "nitrogen" test. 

 {c) The heat test to ascertain its stability or permanency. 

 (^) To prove the absence of unnitrated cotton. 

 {e) To find the degree of vicosity. 



17 



