Gun-cotton, analysis of, 212. boiling, 64. complete series of, 52, 54. compressing, moulding, and packing, 67, 77, 78. dipping and steeping the cotton, 60. drying the cotton, 58. granulation of, 79. manufacture of, 57. Abel's method, 57. Stowmarket, 57. Waltham Abbey, 71. products of decomposition of, 55. properties of, 54. pulping, 65. washing, 63. as a mining explosive, 56.

Guttmann's nitric acid plant, 45.

Guttmann's heat test, 256.

Handy's method for determining moisture in dynamite, 197.

Hannah, Dr N., on roburite explosion gases, 139.

Heat developed by explosives containing nitro-glycerine, &c., 288.

Heat test, Abel, 249.

Hellhoffite, 152.

Henrite powder, 191.

Hollander, 65.