Word: disc
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Dates: during 1900-1909
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...ZOOLOGICAL CLUB. "Morphology of the Apical Disc in Echini." Professor R. T. Jackson. Zoological Laboratory, 4th floor, Room...
...ZOOLOGICAL CLUB. "Morphology of the Apical Disc in Echini." Professor R. T. Jackson. Zoological Laboratory, 4th floor, Room...
...GEOLOGICAL CONFERENCE. "Structure of the Apical Disc in Echini." (Illustrated by the Stereopticon.) Professor R. T. Jackson. Mineralogical Lecture Room...
...GEOLOGICAL CONFERENCE. "Structure of the Apical Disc in Echini." (Illustrated by the Stereopticon.) Professor R. T. Jackson. Mineralogical Lecture Room...
...Observatory. Its mirror, which was purchased from the estate of Dr. A. A. Common of Ealing, England, in 1904, is five inches thick, has a diameter of five feet, and weighs over half a ton. Three months of continuous work were spent in shaping the mirror from the rough disc, and 410,000 strokes of the polishing machine were needed to give it the required smoothness. The preparation of the site was begun September 28, 1904, and the remounting has since gone on slowly, until the work is now so far advanced that in a few weeks the telescope will...