May 26, 1856.] ASIA. 161 



the Trigonometrical Sui-vey of a large portion of India, by Lient.- 

 Colonel Waugh, the Surveyor-General of India. 



This work consists of geodetical operations of the highest order, 

 carried on through countries for the most part unexplored, and, 

 until lately, inaccessible to Europeans, or, in the words of the 

 Society's motto, " Terrce Heclusce." 



The first series of this important work is mentioned by my noble 

 predecessor in his Address, as extending from the Seronj base to 

 Karachi ; and I gather from a paper laid before the Council by our 

 Vice-President, Colonel Sykes, that the second series of operations 

 branches off to the north-west, from the great meridional arc at 

 Banog and Amsot, through the plains of the Punjab, and along 

 the southern face of the Sub-Himalaya ranges to Attock and to 

 Peshawur. At Attock, a base of verification was measured. This 

 series extends over seven degrees of longitude, and over a space of 

 more than 100 miles in width. The third series consists of meri- 

 dional arcs passing through Sind and the Punjab from Karachi to 

 Attock, thereby uniting the before-mentioned bases of verification at 

 those places ; and the whole completes a gigantic geodetical quad- 

 rilateral, of which the great arc, between Seronj and Banog, forms 

 the western side, and corresponds with a similar grand quad- 

 rilateral on the eastern side, begun and partially completed by 

 our Associate, Colonel Everest, &c. 



Too much praise cannot be bestowed upon this most elaborate 

 and important work, carried on as it has been with such precision 

 through countries almost wholly unexplored and injurious to the 

 health of Europeans. 



From Mr. J. Walker, the Hydrographer to the East India Com- 

 pany, we learn, that after the measurement of the base of verifica- 

 tion near Karachi, a party remained to observe the latitudes, and 

 to compute and register tidal observations; while another party 

 was detached to build towers, to facilitate the triangulation of the 

 Great Indus series. Another party also has been engaged on the North- 

 West Himalaya series, the operations of which were carried, on in 

 the region of perpetual snow, and it required all the energy and 

 determination of the parties to accomplish the work assigned to 

 them. The Assam longitudinal series had proceeded eastward, as 

 far as longitude 89° 30' 29'', when the party was obliged precipitately 

 to withdraw for the season on account of the floods. The South-Coasl 

 series has been extended to Kuttack ; its farther progress, however, 

 was retarded by the whole party having been prostrated by fever. 



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