Account of the operations of the Great trigonometrical survey of India ...

XVIII. Astronomical observations for latitude made during the period 1885 to 1895 and deduced values of the deflections of the plumb-line. Prepared under the directions of...S.G. Burrard. 1906.--XIX. Levelling of precision in India (1858-190) by S.G. Burrard..1910.--XIXA. Descriptions and heights of bench-marks on southern lines of levelling. Prepared under the directions of S.G. Burrard. 1910.--XIXB. Descriptions and heights of bench-marks on the northern lines of levelling. Prepared under the directions of S.G. Burrard. 1910.

XIV. General description of the principal triangulation of the south-west quadrilateral including the simultaneous reduction and the details of its compnonent series. Prepared under the directions of W.H. Cole. 1890.--XV. Electro-telegraphic longitude operations executed during the years 1885-86, 1887-88, and 1889-90 and 1891-92, and the revised result of arcs contained in vols. IX and X, also the simultaneous reduction and the final results of the whole of the operations. Prepared under the direction of G. Strahan. 1893.--XVI. Details of the tidal observations taken during the period from 1873 to 1892 and a description of the methods of reduction by J. Eccles...Prepared under the directions of S.G. Burrard. 1901.--XVII. Electro-telegraphic longitude operations executed during the years 1894-95-96. The Indo-European arcs from Karachi to Greenwich. Prepared under the directions of S.G. Burrard. 1901.

XI. Astronomical observations for latitude made during the period 1805 to 1885, with a general description of the operations and final results. Prepared under the directions of G. Strahan. 1890.--XII. General description of the principal triangulation of the sourthern trigon, including the simultaneous reduction, and the details of two of the component series: the great arc meridional, section 8⁰ to 18⁰, and the Bombay longitudinal. Prepared under the directions of G. Strahan. 1890.--XIII. Details of the principal triangulation of five of the component series of the southern trigon, including the following series: the south Konkan coast, the Mangalore meridional, the Madras meridional and coast, the south-east coast, the Madras longitudinal. Prepared under the directions of G. Strahan. 1890.

VIII. Details of the principal triangulation of eleven of the component series of the north-east quadrilateral, including the following series: The Gurwani meridional, the Gora meridional, the Hurilaong meridional, the Chendwar meridional, the north Parasnath meridional, the north Maluncha meridional, the Calcutta meridional, the East Calcutta longitudinal, the Brahmaputra meridional, the eastern frontier, section 23⁰ to 26⁰, the Assam longitudinal. Prepared under the direction of J.T. Walker. 1882. IX. Electro-telegraphic longitude operations executed during the years 1875-77 and 1880-81 by W.M. Campbell and W.J. Heaviside. Prepared under the directions of J.T. Walker. 1883.--X. Electro-telegraphic longitude operations executed during the years 1881-82, 1882-83 and 1883-84 by G. Strahan and W.J. Heaviside. Prepared under the directions of C.T. Haig. 1887.

V. Details of the pendulum operations, by J.P. Basevi and W.J. Heaviside and of their reduction. Prepared under the directions of J.T. Walker. 1879.--VI. The principal triangulation of the south-east quadrilateral, including the great arc, section 18⁰ to 24⁰, the east coast series, the Calcutta and the Bider longitudinal series, the Jabalpur and the Bilaspur meridional series, and the details of their simultaneous reduction. Prepared under the directions of J.T. Walker. 1880.--VII. General description of the principal triangulation of the north-east quadrilateral, including the simultaneous reduction, and the details of five of the component series: The north-east longitudinal, the Budhon meridional, the Rangir meridional, the Amua meridional, the Karara meridional. Prepared under the directions of J.T. Walker. 1882.

I. The standards of measure and the base-lines. Also an introductory account of the early operations of the survey during the period 1800-1830. By J. T. Walker. 1870. II. History and general description of the principal triangulation and of its reduction. By J. T. Walker. 1879. III. The principal triangulation. The base-line figures, the Karachi longitundinal, N.W. Himalaya, and great Indus series of the north-west quadrilateral. By J.T. Walker. 1873. (Issued 1879)--IV. The principal triangulation. The great arc (section 24⁰-30⁰) Rahun, Gurhagarh, and Jogi-Tila meridonial series, and the Sutley series of the north-west quadrilateral. By J.T. Walker. 1876. (Issued 1879)--IVa. General description of the principal triangulation of the Jodhpore and the eastern Sind meridional series of the north-west quadrilateral with the details of their reduction and the final results. Prepared in the office of the Trigonometrical branch, Survey of India...C.T. Haig in charge. 1886.

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