Coke vs. Coal.

다국어 초록 (Multilingual Abstract)

It seems to be the word now a days to do a thing first and to prove that it can be done afterwards. Instead of deducing the art from the science, to draw the science from the art. After Giffard's injector had accomplished its apparent anomaly, which nine out of ten engineers would have beforehand declared impossible, sundry men of science volunteered a demonstration of the problem which was practically solved.