of Gas Evolved, &c.--Lead Cylinders--The Foot-Pounds Machine--Noble's
Pressure Gauge--Lieut. Walke's Results--Calculation of Pressure Developed
by Dynamite and Gun-Cotton--McNab's and Ristori's Results of Heat
Developed by the Explosion of Various Explosives--Composition of some of
the Explosives in Common Use for Blasting, &c.

INDEX



LIST OF ILLUSTRATIONS.

FRONTISPIECE--Danger Building showing Protecting Mounds.
1. Section of Nitro-Glycerine Conduit
2. Melsens System of Lightning Conductors
3. French System
4_a_ & 4_b_. English Government System
5. Upper Portion of Nitrator for Nitro-Glycerine
6. Small Nitrator
7. Nathan's Nitrator
8. Nitro-Glycerine Separator
9. Nitro-Glycerine Filtering Apparatus
10. Cotton-Waste Drier
11. Dipping Tank
12. Cooling Pits
13. Steeping Pot for Gun-Cotton
14. Hydro-Extractor or Centrifugal Drier
15_a_ & 15_b_. Gun-Cotton Beater
16_a_. Poacher for Pulping Gun-Cotton
16_b_. Plan of same