ystem is that it can be rewound engaged on another investigation, which we can only maker of the lens, and it is not too much to say that without affecting the running of the apparatus. The allude to—the photometry of stars. This is executed the high quality of the Harvard observatory work wheel… … the lenses is screwed. The HUYGHENIAN MOTION, polar axis is in tion photometer is employed. The results are of prolongation o f much practical value for use in connection with astro- this fork. Hence, nomical work, and when completed are destined to if the glass is di- rected to a given form a most…
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