^' 70 Proceedings of Philosophical Societies, [Jan. 



found. Here the strata, according to Lieut. Gerard's observation, 

 run north-west to south-east, and dip to the north-east, at an 

 angleof40°or4.'>^ 



In the neighbourhood of Namptusangi, the bed of the Sutleig 

 is 8220 feet above the sea, and consists of only two sorts of rock, 

 viz. mica slate and granular quartz, with imperfectly crystalHzed 

 hornblende. At its confluence with the Le river, the banks are 

 composed of granite. On ascending the latter stream, the 

 hanks were found to exhibit specimens of slate, potter's clay, 

 marl, or loam and sand, and stalactitic carbonate of lime. 

 Higher up the same river, and in the vicinity of Chango, where 

 the bed is not less than 9900 feet above the sea, primitive lime- 

 stone, blue and likewise greyish-white, with disintegrated pyrites, 

 were found ; also mica slate, with fragments of veins. In one 

 instance, white quartz with mica, hornblende, and garnet ; in 

 another, actinolite, with quartz, mica, and garnet. 



Between Namgia and Shisske, where the survey eastward 

 terminated, and where the bed of the river is 9000 feet above 

 the level of the sea, the rocks are composed of granite, with 

 and without tourmaline and garnets, gneiss, mica slate, compact 

 quartz, cyanite, with quartz and mica, and compact felspar, with 

 hornblende. 



North of the pass of the Shisske-ghute is situated the 

 Tarhigang mountains, which Lieut. Gerard ascended to the 

 prodigious height of 19,411 feet above the level of the sea, and 

 within two miles of the top, which is estimated at 22,000 feet. 



The rocks here lie in immense detached masses, heaped upon 

 one another. One specimen of whitish primitive limestone, arid 

 another of granite, with tourmaline and garnet, which were 

 found at this station, have been preserved. 



The Rol or Shatul pass, over the Himalay mountains, by 

 "which the surveyors returned from this arduous journey, is 

 nearly 15,000 feet high. The rocks at the summit of this pass 

 consist of gneiss ; and the peaks on each side, rising to an eleva- 

 tion of nearly 3000 feet more, appear to be formed of the same 

 materials. On descending the southern side from the Rol, at 

 the height of 12,000 feet above the sea, the rocks are found 

 generally composed of gneiss ; and on the northern side, the 

 prevalent rock was ascertained to be granular quartz. 



Seeds of a species of Campanula were gathered at the eleva- 

 tion of 16,800 feet above the level of the sea, at a spot where 

 the thermometer at noon in the middle of October was 27^ of 

 Fahr. Shrubs were found in a vegetating state at a still greater 

 altitude. 



Dec. 15. — " A Notice respecting the Cally Copper-Mine in 

 Scotland," by John Taylor, Esq. Ireasurer of the Geolog. Soc. 

 was read. This mine is situated near Gatehouse, a small town 

 in Kircudbrightshire, on the mail road from Dumfries to Port 

 Patrick. Veins producing lead had been worked there for 



