. Annual report for the year ended June 30 .... United States National Museum. INVESTIGATION AND RESEARCH 101 servatory at Arcetri and at the Institato Nazionale della Ottica of the University of Florence, He was invited to present a paper on Giovanni de'Dondi at the University of Padua in October for the sexcentenary of the astrarium. He has completed a book entitled "Mechanical Universe" on the de'Dondi astrarium in collaboration with Francis K. Maddison of the Museum of the History of Science at Oxford University. This work, which is scheduled for publication during the present ye


. Annual report for the year ended June 30 .... United States National Museum. INVESTIGATION AND RESEARCH 101 servatory at Arcetri and at the Institato Nazionale della Ottica of the University of Florence, He was invited to present a paper on Giovanni de'Dondi at the University of Padua in October for the sexcentenary of the astrarium. He has completed a book entitled "Mechanical Universe" on the de'Dondi astrarium in collaboration with Francis K. Maddison of the Museum of the History of Science at Oxford University. This work, which is scheduled for publication during the present year, is the product of his research in north Italian archives during his tour of museums and will present a considerable amount of hitherto mistudied documentary material. During the past year Mr. Beclini also completed three more articles about antique scientific instruments in the national collections, one of which has already been published; a comprehensive investigation of the invention of the orrery, including study of an unrecorded instru- ment recently discovered in an American collection; an article on the evolution of science museums for the special museum issue of Technology and Gultwre; and a study of early Italian science museums for publication in Cultura e Scuola in Rome. In addition to these, Mr, Bedini has completed an article on Galileo's preoccupation with the measurement of time, which will form part of the /Saggl, the memorial volume of Galilean studies to be published by the Consiglio Nazionale delle Ricerche in Rome; a comparative study of Galileo's instruments for the memorial volume of Galilean studies to be pub- lished by Notre Dame University; and a paper about the craftsmen. Historic machines and patent models illustrate development of type- writer in hall of light Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may


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