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
S. Isadore Miner in the schools from which she graduated. She followed this vocation until her marriage in 1844 to J. Weston Miner. Her husband being connected with the "Battle Creek Review" and Herald publishing house, Miner was engaged as a proof-reader, and finally as a writer, editing a large share of the work on a series of children's books issued from that office. She had always shown a predilection for writing both verse and prose. When teaching, she sometimes wrote stories or verses to reprove faults among her pupils that she preferred to correct in an impersonal way, and folding her pages