The Origins of Cyberspace collection described as lots 1-255 will first be offered as a single lot, subject to a reserve price. If this price is not reached, the collection will be immediately offered as individual lots as described in the catalogue as lots 1-255.
KRATZENSTEIN, Christian Gottlieb (1723-95). "Letter to George Louis Le Sage (1724-1803), dated Copenhagen, February 2, 1772". In Notice de la vie et des écrits de George-Louis Le Sage de Genève, ed. Pierre Prevost (Geneva: J. J. Paschoud, 1805): 399-406. Modern quarter morocco, marbled boards. OOC 5. [With:] DODSON, James (d. 1757). The anti-logarithmic canon. Being a table of numbers, consisting of eleven places of figures, corresponding to all logarithms under 100000. London: printed for James Dodson and John Wilcox, 1742. Contemporary calf, rebacked. OOC 4.
Details
KRATZENSTEIN, Christian Gottlieb (1723-95). "Letter to George Louis Le Sage (1724-1803), dated Copenhagen, February 2, 1772". In Notice de la vie et des écrits de George-Louis Le Sage de Genève, ed. Pierre Prevost (Geneva: J. J. Paschoud, 1805): 399-406. Modern quarter morocco, marbled boards. OOC 5. [With:] DODSON, James (d. 1757). The anti-logarithmic canon. Being a table of numbers, consisting of eleven places of figures, corresponding to all logarithms under 100000. London: printed for James Dodson and John Wilcox, 1742. Contemporary calf, rebacked. OOC 4.
FIRST EDITIONS. Kratzenstein, a Danish physician and scientist, describes his recreation of Leibnitz's calculating machine that he presented before members of the Imperial Academy of Sciences in St. Petersburg in 1762. The sole example of Leibnitz's calculating machine built in 1674 was lost shortly afterward, and not found again until 1879. Thus during the 18th century the machine's design had to be inferred from written models and illustrations. Kratzenstein's machine may be unknown except for its description in this book.
FIRST EDITIONS. Kratzenstein, a Danish physician and scientist, describes his recreation of Leibnitz's calculating machine that he presented before members of the Imperial Academy of Sciences in St. Petersburg in 1762. The sole example of Leibnitz's calculating machine built in 1674 was lost shortly afterward, and not found again until 1879. Thus during the 18th century the machine's design had to be inferred from written models and illustrations. Kratzenstein's machine may be unknown except for its description in this book.
Further details
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