Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 616
r, was the first who actu-ally constructed a lens on that principle, and fully availed himself of the advantages which it affords ;anil he has subdivided, with such judgment, the whole surface of the lens into a centre lens and concen-tric annular bands, and has so carefully determined the elements…
Mechanical engineering · Mechanics · Engineering
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