SURVEYS. 
243 
Crreat Trigonometrical Survey. 
An Account of the Measurement of two Sections of the Meridional 
Arc of India bounded by the Parallels of 18° 3' 15", 24° 1' 11", 
and 29° 30' 48". By Lieut.-Col. Everest. 
2 vols. 4«. London, 1847. 
With Atlas of Engravings. 
R/cports on the Survey of India (Reports on the Operations of the 
Great Trigonometrical Survey of India). For the three years 
ending 1858-59, and for 1867-77. Folio. Calcutta, 1861-78. 
Oeneral Report on the Operations of the Survey of India during 
1878-79. Folio. Calcutta, 1880. 
Abstract of the Reports of the Surveys and of other Geographical 
Operations in India for 1869-70. 8«. London, 1871. 
Tables of Heights in Sind, the Panjab, N.W. Provinces, and 
Central India, determined by the Great Trigonometrical Survey 
of India, trigonometrically and by spirit-levelling operations, to 
May 1862. [With Map.] 8^. Calcutta, 1863. 
Tables of Heights in ^^'.W. Provinces and Bengal, determined by 
the Great Trigonometrical Survey of India, by spirit-levelling 
operations, to May 1865. 8<*. Roorkee, 1866. 
Account of the Operations of the Great Trigonometrical Survey 
of India. 4o. 
Vol. 1. The Standards of Measures and the Base-Lines, also an intro- 
ductory account of the early operations of the Survey during the 
Period 1800-30. By Colonel J. T. Walkpy, Dehra Doon, 1870 
„ 2. History and General Description of the Principal Triangula- 
tion, and of its reduction. By Colonel J. T. Walker. Dehra 
Dun, 1879. 
„ 3. The Principal Triangulation. The Base-Li ne Figures, the 
Karachi Longitudinal, N.W. Himalaya, and Great Indus Series 
of the North-West Quadrilateral. By Colonel J. T. Walker. 
Dehra Doon, 1873. 
„ 4. The Principal Triangulation. The Great Arc (section 24°-30''), 
Kahun, Gurbagarh and Jogi-Tila Meridional Series, and the 
Sutlej Series of the North-West Quadrilateral. By Colonel J. 
T. Walker. Dehra Dun, 1876. 
„ 5. Details of the Pendulum Operations by Captains J. P. Basevi 
and W. J. Heaviside, and of their Keduction. Dehra Doon and 
Calcutta, 1879. 
Synopsis of the Results of the Operations of the Great Trigono- 
metrical Survey of India. 4°. 
Vol. 1. Descriptions and Co-ordinates of the Principal and Secondary 
Stations and other Fixed Points of the Great Indus Series, or 
Series D of the North-West Quadrilateral. By Colonel J. T. 
Walker. Dehra Doon, 1874. 
„ 2. Descriptions and Co-ordinates of the Principal and Secondary 
Stations and other Fixed Points of the Great Arc. Section 
240-30'', or Series A of the North-West Quadrilateral. By 
Colonel J. T. Walker. Dehra Doon, 1874. 
R 2 
