Statistics for occurrence #1 of “Ptolemy Soter” in entry observatory of Harper's Encyclopedia of United States History:, in Egypt, was another, with a golden circle 200 feet in diameter; that at Benares was at least as ancient as these. The first in authentic history was at Alexandria, about 300 B. C., erected by Ptolemy Soter . The first observatory in Europe was erected at Nuremberg, 1472. by Walthers. The two most celebrated of the sixteenth century were the one erected by Landgrave William IV. at Cassel, 1561, a...
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