Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 175
All the lamps as yet described are subject to one common evil, that of having the oil vessel, at allevents, within a few lines of the level of the burner; in a position, therefore, which throws the mostobjectionable shadow. A whole series c; contrivances have consequently resulted from the efforts…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
