## On an Integrating Machine having a new Kinematic Principle (James Thompson) WITH On an instrument for calculating the integral of the product of two given functions (William Thomson) WITH Mechanical Integration of the Linear Differential Equations of the Second Order with Variable Coefficients (William Thomson) WITH Mechanical Integration of the general Linear Differential Equation of Any order with Variable Coefficients (William Thomson) in Proceedings of the Royal Society of London 24 pp. 262-275, 1876 WITH (2nd Volume): Harmonic Analyzer (William Thomson) in Proceedings of the Royal Society of London 27 pp. 181-189, 371-373, 1878; WITH (3rd Volume): On a Machine for the Solution of Simultaneous Linear Equations (William Thomson) in Proceedings of the Royal Society of London 28 pp.111-113, 190-195, 1879

London: Harrison & Sons. 1st Edition. FIRST EDITIONS (IN THREE VOLUMES) OF THE ONLY PUBLISHED DESCRIPTION (& ILLUSTRATIONS) BY WILLIAM THOMSON (Baron Kelvin) OF HIS HARMONIC ANALYZER, THE FIRST OPERATIONAL TIDE PREDICTOR. Six papers appear in three separate volumes. “Thomson’s system [was] used regularly to collect tide information at a...... More