Word: wolff
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Dates: during 1890-1899
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Last night Dr. Wolff gave a very interesting talk to the club on microscopic photography. He spoke especially of the working of the instrument used. Many combinations of lenses, constructed with peculiar care are necessary to do away with the spherical, chromatic, and actinic aberration of the light. The presence of any of these defects mars the accuracy of the work. Stress was also laid on the difficulty of photographing the many colored images, the points of focus of the color rays and of the actinic rays lying in different planes, and of the method of regulating the exposures. This...
Best general references: N. Y. Tribune Sept. 4-21, 1893; R. H. Wolff in Aug. Forum; Public Opinion, Sept...
Jacob Diener S. L. Wolff...
...WOLFF, Treas.VIEWS of the Belmont School, Belmont, three miles from Cambridge, are on exhibition at the University Bookstore to-day. This is a private boarding school for boys and fits for Harvard on any of the four methods of admission. Under the management of Harvard men, the school completes its third year with a graduating class of nine college candidates...
...WOLFF, Treas...