Geordie lamp the base so that it gave more light and tried new versions on 4 and 30 November. This was presented to the Literary and Philosophical Society (Lit & Phil) of Newcastle upon Tyne on 5 December 1815. Although controversy arose between Stephenson's design and the Davy lamp (invented by Humphry Davy in the same year), Stephenson's original design worked on significantly different principles from Davy's final design. If the lamp were sealed except for a restricted air ingress (and a suitably sized chimney) then the presence of dangerous amounts of firedamp in the incoming air would (by its combustion) reduce
Charles W. Miner early twenties, Miner moved to Fort Wayne, where he resided for the remainder of his life and continued his career as a photographer. Miner married Mary S. Criswell, an Ohio native and resident of Fort Wayne, on November 28, 1905. The couple had two daughters, Sarah, who was born around 1908, and Mildred, born around 1912. After his move to Fort Wayne around 1887, Miner spent a few years working in the photography studio of Felix Schanz, "an established and influential Fort Wayne photographer," whose studio was located at 112 Calhoun Street. (The address was later changed to 922 Calhoun