52 ASTRONOMY 



52385 Newcomb, S. On the position of the planes towards 



which the stars tend to crowd. Wash. 1904. 



52387 Muggins, Sir W., and M., Lady. Atlas of stellar spectra. 



Lond. 1899. 

 52389 Burnham, S. W. Catalogue of double stars. 2 vols. 



Wash. 1906. 

 52389 Knobel, E. B. Ulugh Beg's Catalogue of stars. 



Wash. 1917. 



52389 Peters, C. H. F., and Knobel, E. B. Eevision of 

 Ptolemy's Almagest. Wash. 1915. 



525 THE EARTH. 



52512 Poynting, J. H. The Mean density of the Earth. 



Lond. 1894. 



'52524 Wilde, A. Causes of the phenomena of terrestrial 



magnetism. [Lond. 1891.] 



5 2 535 De Horsey, Sir A. F. Draysonia : Second rotation of 



the earth. Lond. 1911. 



5256 Darwin, Sir G. H. The Tides and kindred phenomena. 



Lond. 1898. 



526 GEODESY. 



526 Burrard, Sir S. Q. Investigations of isostasy. 



Dehra Dun 1918. 



'5263 Hunter, J. de G. The Earth's axes and triangulation. 



Dehra Dun 1918. 



5266 Mackay, A. [LL.D., King's and Mar. Coll.]. Determin- 

 ation of the latitude and longitude of Aberdeen. 



[Edin. 1793-96. 



52673 Couchman, H. J. Pendulum operations in India and 

 (54) Burma. Dehra Dun 1915. 



5269 Baker, T. Land and engineering surveying. 



Lond. 1898. 



Duplessis, J. Traite du leve des plans et de 1'arpentage. 



Paris 1901. 



Hammer, E. Lehrbuch der elementaren praktischen 

 Geometrie. Vol. l-> Leip. 1911-> 



Usill, Q. W. Practical surveying. Lond. 1901. 



73 



