0CT . — m ^r. 1858-59.] Report of the Magnetic Survey. 341 



reddish and white sandstone, in large banks, which are generally 

 horizontal — it reposes upon limestone and shales of blue and grey- 

 colors, which very often are a little more inclined than the sand- 

 stone, and the shales are quite identical with similar rocks which 

 I observed in the Gwalior Territory. The plateau of Bundle- 

 kund terminates abruptly about 40 miles South of Allahabad, 

 where the sandy deposits of the plain of Hindoostan begin. 



Report on the Proceedings of the Magnetic Survey, from January 

 to May 1856. By Hermann Schlagintweit. 



Routes. 



After having completed the observations at Gowahatty, detail- 

 ed in the last pages of the Report No. III., I left Gowahatty De- 

 cember 21st, and proceeded up the Brahmapootra to Mungeldie ; 

 from there to Oodulgoorie on the Frontier of Assam and Bhootan. 



I found occasion to proceed from this place into the country of 

 the Kampo-Bhootans, who occupy the Himalayas East of Bhootan 

 Proper ; while my Assistant, Mr. Adams, and the Draftsman, Ab- 

 dool, who accompanied me as far as Oodulgoorie, went to the coal 

 mines and salt wells in the Baree Dihing. 



I made arrangements, immediately after my arrival at Oodulgoo- 

 rie, with a former Rajah of Towang-Chang-To, who was found 

 willing to be my guide as far as Nurigoon, which is about one- 

 third of the breadth of the Himalayas. 



I staid four days at Nurigoon, and had occasion to make, besides 

 magnetic observations, (the instruments had been, till used, care- 

 fully concealed in cotton bags) an excursion on the Zinghyla (Deer 

 Mountains) for surveying the different valleys and for making some 

 drawings. 



Vol. xx. o. s. Vol. v. n. s. 



