Abstract
AMONG the objects recently placed on exhibition in the Science Museum, South Kensington, is a model of the complete lay-out for a 120-ton 10,000 horse-power Mond gas producer plant with ammonia recovery apparatus which has been lent by the Power-Gas Corporation, Ltd. Mr. Edward J. Willis, an American authority on astronomical navigation, has sent from the United States an example of a navigating machine which was invented by him and constructed at a cost of about £300. The machine solves problems in spherical trigonometry connected with navigation. An example of Selling's calculating machine which has long lain neglected in the stores of the Imperial College of Science and Technology has been lent to the Museum for exhibition. The machine was invented fifty years ago and made ingenious use of the ‘lazy tongs' mechanism in order to perform multiplication and division. A representative selection of fourteen stone (chert) weights and a plaster cast of a fragment of a linear measure, all found in excavations at Mohenjodaro, Harappa, and elsewhere in northern India relics of a civilization of c. 3250-2750 B.C., that formed great cities along the Indus valley, contemporaneous with the ancient Egyptian first to fifth dynasties, and the ancient Sumerian kingdoms in Mesopotamia have been presented by the Archaeological Survey of India.
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Recent Acquisitions at the Science Museum. Nature 138, 279 (1936). https://doi.org/10.1038/138279a0
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DOI: https://doi.org/10.1038/138279a0