404 



Grenada), at 1850 toises ; the top of the Alps 

 and Pyrenees at 1150 toises. The difference of 

 the mean height of the Cordilleras (between the 

 parallels of 5° north and 2° south) and the Alps 

 of Switzerland, is consequently 200 toises less 

 than the difference of their loftiest summits ; 

 and in comparing the passages of the Alps, we 

 see that the mean height of their tops is nearly 

 the same, although the peak Nethou is 600 

 toises lower than Mont Blanc and Mont Rose. 

 Between Himalaya* and the Andes, on the 



* The passages of the Himalaya that lead to Chinese Tar- 

 tary in Hindostan (Nitee-Ghaut, Bamsaru, Chatoulghati, &c.) 

 are from 2400 to 2700 toises of absolute height. With res- 

 pect to the most elevated top of the Himalaya, I have chosen 

 it among the peaks placed between the meridians of the lake 

 Manasarowar and Balaspore, they only having been mea- 

 sured with great precision by MM. Webb, Hodgson, and 

 Herbert. {A 'siat. Research. Vol. xiv, p. 187, 373; Edinb. 

 Phil. Journ.i 1823, i#-18, p, 312). We know no measure so 

 precise, says Captain Hodgson, south-east of lat. 30° 22', 

 and long. 77° 37'. There may be still loftier summits in 

 the meridian of Gorukpur and that of Rungpur $ and it has, 

 in fact, been concluded, according to angles taKen at very 

 great distances, that the peak of Chamalari, near which Tur- 

 ner passed ii> going to Tissu-Lumbu, and the peak Dhawa- 

 lagiri, south of Mustung, near the source of the Gunduck, 

 was 28,077 English feet, (4390 toises) high. (Journ. of the 

 Roy. Instit, 1821, Vol. ii, p. 242.) The measure of Dha- 

 walagiri by Webb, so ably discussed by Mr. Colebroke, was 

 confirmed by Mr. Blake ; but, in the table furnished in this 

 memoir, I thought it would he more prudent for the present, 



