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Scientific American, Vol. 57, No. 13 (September 1887) (1887)

leaf 7

An illustration from Scientific American, Vol. 57, No. 13 (September 1887), 1887, leaf 7
nally. as the same effect on a larger scale was produced. All its original metal lap. Upon this a piece of Brussels When they abandon it, it is hard to say where a suc- these changes appeared pictured upon or in front of carpet is cemented, and the lens is placed thereon. The cessor can be found.… … tained. the piece as stand the test are used. TESTING PHOTOGRAPHIC OBJECTIVES. In these methods the rays of light Often a lens is cut from the center, pass twice through the lens, so that a while the corners have to be rejected. doubling of the effect due to a misshape is obtained. The manufacture…

Contained · Manufacture · Patented · Lens · Scientific American · Patents · Pulverizing attachment · Practical treatise · Boracic acid · American supplement · Years ago · Triple expansion · Express money · Address munn · Perspective view

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