t. All refrac-tive errors and complications are clearly explained, and themethods of correction thoroughly elucidated. This book fills the last great want in higher refractiveoptics, and the knowledge contained in it marks the standardof professionalism. Bound in Cloth—408 pages—with… … A Treatise on the Shadow Test inits Practical Application to theWork of Refraction, with an Ex-planation in Detail of the OpticalPrinciples on which the Scienceis Based. This new work, the sale of which has already necessitateda second edition, far excels all previous treatises on the subjectin…
Clocks and watches
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