How to make inventions; or, Inventing as a science and an art (1893)
Thompson, Edward P · New York, D. Van Nostrand co · leaf 147
the particular caseunder consideration, the fact of the imprints by pressure cameaccidentally. The fact came by experimenting in the case ofHumphrey Davys conception of the safety lamp, by which hebecame titled Sir, and received in the first few months of itsuse $12,000 collected for him by the… … was especially spurred on by a particular explosion in which onehundred men were killed in a single mine within one minute.This made him the more eager to solve the problem. Inaccordance with the principle already pretty well establishedby other successful inventors, he becomes thoroughly…
Inventions
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