Ellipticon Map (1883) Calculator of Earth. Star of

The Ellipticon : an exposition of the Earth s astronomy, and the equation of time, by J. L. Naish, B. A. (1883) Link to Map: The Ellipticon is a set of graphic diagrams and explanatory text discussing the troubling nature of astronomical equations of time. In 1865, less than twenty years before the Ellipticon, Naish patented An Improved Mode of Illustrating Astronomical Phenomenon. The Ellipticon was included in an informational pamphlet, but the original text is not included with the diagrams; the Ellipticon itself includes detailed texts about the elliptical nature of the cosmos and the calculations the Ellipticon is capable of making. The AGSL acquired the Ellipticon in 1891the acquisition is recorded in one of the 1891 editions of the Journal of the American Geographical Society of New York. LPM