Baron Welden's Account of Monte Rosa: 153 



of its summits, and we stated the trigonometrical observations by which 

 they obtained, from its most elevated peak, an altitude exceeding 

 that of Mont Blanc. It appears, however, that these observations were 

 not correctly made, and that Mont Blanc is still entitled to the high- 

 est dignity among our European mountains. 



The following are the observations which have been made at different 

 times upon the height of Monte Rosa. 



Toises. 



In 1788, M. Oriani, from Milan - - 2389 



from Mont Generoso - 2391 



In 1803, from Milan - - 2385 



In 1824, M. Carlini, from Milan - - 2374 



from Turin - - 2343 



.from Superga - 2357 



from Mondovi - . 2319 Rejected. 



In 1822, Baron "Welden, from Monte Carnero - 2370 



Mean height of Monte Rosa - 2373 



The following observations have been made at various times on Mont 

 Blanc 



Toises. 

 In 1796, M. Tralles - - . 2468 



In 1821, M. Carlini, from Mont Colombier - 2460 



The Austrian Engineers from Mont Trelod 2462 



from Perron d'Encombres 2159.9 

 from the Glacier of Ambin 2463.9 

 from Roche Melon 2458.8 



The French Engineers from Mont Granier 2460.1 



Mean height of Mont Blanc - 2461.8 



Do. of Monte Rosa - 2373.0 



Hence, Mont Blanc is higher than Monte Rosa by - 88.8 Toises. 



As some persons have claimed for Mont Oerteles, in the Tyrol, an 

 elevation equal to that of Mont Blanc, we shall give the following mea- 

 sures of its height, as obtained in 1818 by the Austrian engineers, from 

 the triangulation which they then conducted in the Tyrol. 



Toises. 



In 1818, from Pflinn Spitze - - 2012.5 



from Monte Motto ... 2010.1 



from Corno di S. Colombano - 2009.5 



from Pizzo del Ferro - - 2010.O 



Mean height of Oerteles - 2010.5 

 Height of Mont Blanc . 2461.8 



Hence Mont Blanc is higher than Oerteles by - 451.3 Toises. 



