Walke’s pressure gauge results, 289.

War Office experiments with cordite, 173.

Washing gun-cotton, 63.
  nitro-glycerine, 37.

Waste acids from nitro-glycerine, 41, 226.

Weltern powder, 191.

Werner & Pfleiderer’s mixing machine, 124.

Whirling out the acids from gun-cotton, 62.

Will’s test for nitre-cellulose, 261.

Wood pulp, 126.

Xylonite Company’s process, 96.

Zenger’s lightning conductors, 11.

Printed at THE DARLEN PRESS, Edinburgh.