newbery-vautin

Updated: June 23, 2025

Here were long rows of revolving barrels, on the Newbery-Vautin principle, but with this marked difference, that the pressure in the barrel was obtained from an excess of the gas itself, generated from a charge of chloride of lime and sulphuric acid.

J. C. F. (Joseph Colin Frances) Johnson - Getting Gold: a practical treatise for prospectors, miners and students