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Works by D. J. Bryden

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  1.  235
    Spectacles improved to perfection and approved of by the Royal Society.D. J. Bryden &D. L. Simms -1993 -Annals of Science 50 (1):1-32.
    The letter sent by the Royal Society to the London optician, John Marshall, in 1694, commending his new method of grinding, has been reprinted, and referred to, in recent years. However, there has been no comprehensive analysis of the method itself, the letter and the circumstances in which it was written, nor the consequences for trade practices. The significance of the approval by the Royal Society of this innovation and the use of that approbation by John Marshall and other practitioners (...) are examined. Gaps in existing accounts of Marshall's method are partly remedied by supplementing surviving written materials with accounts of contemporary, and present-day, trade practices based on his method. The reasons why Marshall and his contemporaries failed to record his method and specify his improvements are discussed. The reactions of the Spectacle Makers' Company and its more prominent members, both to the innovation itself and to the Royal Society's letter, are analysed. The impact of the new technique on contemporary and later opticians is described. (shrink)
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  2.  35
    Evidence from advertising for mathematical instrument making in London, 1556–1714.D. J. Bryden -1992 -Annals of Science 49 (4):301-336.
    The paper examines the structure of the mathematical instrument making trade in London from the mid-sixteenth century to the opening of the Hanoverian era. This analysis of the trade is primarily based on evidence drawn from contemporary advertising. A distinction between informal editorial recommendations and advertising per se is made. It is concluded that up to the mid-seventeenth century mathematical instrument makers worked in either wood or metal. After that date a growing number of workshops advertised that they manufactured in (...) all media. Advertising was aimed at informing professional users from whom particular instruments could be purchased, but not on informing customers in specific terms of the range of instruments manufactured. It is concluded that until the early eighteenth century most mathematical instruments were commissioned. Only towards the end of the period is there evidence of over-the-counter sales, and advertising aimed at encouraging the growing consumer market to buy mathematical instruments for the practice of science as a social or recreational activity. (shrink)
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  3. Instruments and Measurement-Humphrey Cole: Mint, Measurement and Maps in Elizabethan England.Silke Ackermann &D. J. Bryden -1999 -Annals of Science 56 (3):324-324.
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  4.  37
    Sir Samuel Morland's account of the balance barometer, 1678.D. J. Bryden -1975 -Annals of Science 32 (4):359-368.
    SummaryRecent studies have confirmed the traditional attribution of the invention of the balance barometer to Sir Samuel Morland. Two contemporary references to a 1678 printed pamphlet describing the invention are known but no copy has been located. This paper prints a seventeenth century manuscript copy of Morland's description of his balance barometer. The commentary outlines Robert Hooke's role in the invention. Morland's analysis of the mode of action of the instrument is considered in the light of contemporary comprehension of the (...) barometric phenomennon. (shrink)
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  5.  48
    The Edinburgh Observatory 1736–1811: A story of failure.D. J. Bryden -1990 -Annals of Science 47 (5):445-474.
    In 1736 Colin MacLaurin, Professor of Mathematics in the University of Edinburgh petitioned the Town Council for permission to erect an astronomical observatory in the College to broaden the research and teaching base of the University. After MacLaurin's death, the Town Council and University Senate, more concerned with the promotion of the Infirmary and associated medical teaching, took no further action. The funds raised by MacLaurin were lent to his successor, and largely dissipated. In 1776 the balance was transferred to (...) the proposed Calton Hill Observatory. This private scheme was to be financially self-sufficient, generating income from the casual visitor and fees charged to students. It too failed. Funds were wasted on unnecessary architectural elaboration, the Town Council failed to meet their financial obligations, the University acquiesced in the total inactivity of the Regius Professor of Astronomy, whilst the commercial management-base of the Observatory vitiated any serious scientific activity. (shrink)
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  6.  32
    George Brown, author of the Rotula.D. J. Bryden -1972 -Annals of Science 28 (1):1-29.
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  7.  31
    Astronomy Greenwich Observatory. The Royal Observatory at Greenwich and Herstmonceux, 1675–1975. London: Taylor & Francis, 1975. £25.00. Volume i: Origins and Early History . By Eric G. Forbes. Pp. xv + 204 + 8 plates. London: Taylor & Francis, 1975. £25.00. Volume ii: Recent History . By A. J. Meadows. Pp. xi + 135 + 14 plates. London: Taylor & Francis, 1975. £25.00. Volume iii: The Buildings and Instruments. By Derek Howse. Pp. xix + 178 + 130 plates. London: Taylor & Francis, 1975. £25.00. [REVIEW]D. J. Bryden -1978 -British Journal for the History of Science 11 (2):173-174.
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  8.  43
    C. Blondel, F. Parot, A. Turner and M. Williams. Studies in the History of Scientific Instruments, papers presented at the 7th Symposium of the Scientific Instruments Commission of the Union Internationale d'Histoire des Sciences, Paris 15–19 September 1987. London: Rogers Turner Books Ltd; for the Centre de Recherche en Histoire des Sciences et des Techniques de la Cité des Sciences et de l'Industrie, 1989. Pp. 290. ISBN 0-9502557-8-5. £35.00. [REVIEW]D. J. Bryden -1991 -British Journal for the History of Science 24 (4):490-491.
  9.  38
    Gerard L'Estrange Turner. Scientific Instruments and Experimental Philosophy, 1550–1850. Aldershot, Variorum Press Collected Studies Series. CS 331, 1990. Pp. xii + 329. ISBN 86078-280-8. £49.50. [REVIEW]D. J. Bryden -1992 -British Journal for the History of Science 25 (3):383-383.
  10.  70
    Instruments Van Marum's Scientific Instruments in Teyler's Museum. By G. L'E. Turner and T. H. Levere. Volume IV of Martinus Van Marum: Life and Work, Ed. by E. Lefebvre and J. G. De Bruijn. Leyden: Noordhoff Intertional, 1973. Pp. 401. 65 Hfl. [REVIEW]D. J. Bryden -1976 -British Journal for the History of Science 9 (1):69-70.
  11.  29
    Lives and Works Norman H. Robinson, The Royal Society catalogue of portraits. With biographical notes by Eric G. Forbes. London: Royal Society, 1980. Pp. 343. £25.00. [REVIEW]D. J. Bryden -1983 -British Journal for the History of Science 16 (2):198-199.
  12.  29
    Scientific Instruments Benjamin Martin: Author, Instrument-Maker, and ‘Country Showman’. By John R. Millburn. Leyden: Noordhoff International Publishing, 1976. Pp. xii + 244. Dfl. 63. [REVIEW]D. J. Bryden -1978 -British Journal for the History of Science 11 (3):284-285.
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  13.  39
    Scientific Instruments John and Jonathan Cuthbertson. The Invention and Development of the Eighteenth Century Plate Electrical Machine. By W. D. Hackmann. Communication No. 142 from the Rijksmuseum voor de Geschidenis der Natuurwetenschappen. Leyden, 1973. Pp. 72, including 16 half-tone plates. No price stated. [REVIEW]D. J. Bryden -1977 -British Journal for the History of Science 10 (1):77-77.
  14.  25
    Scientific Instruments Scientific Instruments of the Seventeenth and Eighteenth Centuries and their Makers. By Maurice Daumas. Trans, and ed. by Mary Holbrook. London: Batsford, 1972. Pp. vi + 361. £10. [REVIEW]D. J. Bryden -1974 -British Journal for the History of Science 7 (1):87-88.
  15.  34
    Short Notices of Books Weighing coins: English folding gold balances of the 18th and 19th Centuries. By Michael A. Crawforth, London: Cape Horn Trading Co., 1979. Pp x + 194. £15.00. [REVIEW]D. J. Bryden -1981 -British Journal for the History of Science 14 (1):104-104.
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