1869.] Proceedings of the Asiatic Society. 157 



Trigonometrical Survey are. at the present engaged in those parts of 

 Tibet, and he doubted not that they will bring us ultimately a great 

 deal of the information required on those geographical problems. 



Dr. Anderson said that he had put the question as one of general 

 interest, to elicit information on the subject; he himself held no 

 opinion one way or another regarding the supposed relation of the 

 Tsampo and the Brahmaputra. 



The Hon'ble Mr. Phear referred to the symmetry and the parallel 

 structure of the mountain-ranges in their north-southern extensions, 

 as exhibited on the map, and asked what the average height of these 

 mountains in those districts of Western China was. He thought, that 

 considering the great elevation of the country from which the Irrawadi 

 comes, the river must either pass through a very deep gorge, or be a 

 succession of great falls. 



Mr. Cooper thought the elevation of the mountains, through which 

 the Irrawadi flows, to be about 7,000 feet. 



Dr. Anderson observed that the average height of the hill-ranges 

 south of Bhamo was 5,000 feet, although some of the peaks were as 

 much as 7,000 feet. 



The President, in closing the discussion in which the Hon'ble 

 Mr. Phear, Dr. Anderson, Mr. Cooper, and several other gentle- 

 men took part, observed that the proposition brought forward by 

 Col. Thuillier had been already so well responded to by the meeting, 

 that it would be unnecessary to put it in any more formal way from 

 the chair. He (the Pres.) repeated the thanks and the good wishes of 

 the Society, and joined in the general expression of hope that Mr. 

 Cooper's explorations might be followed by that success which his 

 untiring zeal, courage and perseverance in prosecuting his object fully 

 entitled him to expect. Considering the problem which Mr. Cooper had 

 placed before him, — the opening of a direct communication between 

 India and China and Central Asia, — the President thought that the 

 shortest route should be examined before any other were selected. 



III. — Contribution towards the knowledge of Indian Araclinoidea ; 

 by Dr. F. Stoliozka, (Abstract). 



The author observed that few branches of Zoology had received in 

 India so little attention as the study of the Arachnoidea. They un- 

 fortunately belonged to one of those classes of animals against which 



