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Anonymous

"Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology"

M. TSCHERNING
Adjunct-Director of the Laboratory of Ophthalmology at the Sorbonne,
Paris
AUTHORIZED TRANSLATION
BY CARL WEILAND, M.D.
Former Chief of Clinic in the Eye Department of the Jefferson College
Hospital, Philadelphia, Pa.
This is the crowning work on physiologic optics, and will mark a new era
in optical study. Its distinguished author is recognized in the world of
science as the greatest living authority on this subject, and his book
embodies not only his own researches, but those of the several hundred
investigators who, in the past hundred years, made the eye their
specialty and life study.
Tscherning has sifted the gold of all optical research from the dross,
and his book, as now published in English with many additions, is the
most valuable mine of reliable optical knowledge within reach of
ophthalmologists. It contains 380 pages and 212 illustrations, and its
reference list comprises the entire galaxy of scientists who have made
the century famous in the world of optics.


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