382 Notes, chiefly Geological, [No. 173. 



The elevation of the top of the Manantoddy pass, determined barome- 

 trically by Mr. Babington, is 2,732£ feet above the sea. That of the 

 Devamunni Ghaut, taken approximately by myself, (boiling point) 

 2,498 feet. This observation was taken at Manjugong, which is proba- 

 bly a little lower than the true anticlinal line. At the falls of Gairsup- 

 pa, a little below the summit of the Hossamucki pass, a similar obser- 

 vation made the elevation 2,235 feet. 



The extreme height of the table land of Mysore, at Bangalore, reaches 

 (roughly) 3,000 feet ; at Seringapatam 2,412 feet; Colar 2,732£ feet ; 

 Mysore 2,695 feet; Baitmungalum 2,435 feet; Bellary 1,500 feet; Bel- 

 gaum 2,500 feet ; Poonah 2,500 feet. While the insulated granitic 

 masses on these table lands frequently vie with those of the Ghauts 

 Sivagunga, in Mysore, is calculated at 4,600 feet, and Betrosson, at the 

 slope of the Ghauts, 6,000 feet. These are only excelled (as far as 

 known) by the Ghaut peaks of Bonasson, 7,000 feet, and that of 

 Dodabetta 8,700 feet, and some others of the Neilgherry and Koonda 

 cluster. 



The passes of the eastern Ghauts, as might be expected, have a lower 

 level than those in the western sierra. One of the highest is that of 

 Naikenhairy, 1,907 feet. That of its neighbour, the Moogly pass, 

 from Palamanair to Chittoor, is only 1,635^ feet. (The foregoing mea- 

 surements are taken chiefly from Dr. Babington's and General Cullen's 

 observations.) 



The height of the Heggulla has not, as far as I am aware, been ascer- 

 tained : it is probably of considerable elevation, since Periapatam, which 

 stands on the western slopes of the Ghauts, two marches east of it, 

 has an elevation of about 4,000 feet. 



Munjguny. — Between this place and Devanary, which is usually consi- 

 dered the top of the pass, the Beni river is crossed, which I was assured 

 be the natives is identical with the Oopenputtun river, below the Ghaut. 

 If this be the case, the watershed must be east of Devanary, and pro- 

 bably between it and this place. The stream, swollen by the rains, was 

 unfordable, but is crossed by a rude bridge, called a sar, constructed 

 of trunks of trees bound together by leaves, and supported on piers of 

 large rough stones piled up, and secured from being washed away by 

 cases of strong hurdle work thrown round them. The stream was 



