AAfN ON THE ALPS. 235 



the summary; the mean temperature is 49*^1; 

 this is low, considering the Latitude; but the 

 elevation of the place, its inland situation, and 

 its proximity to the Alps, conspire to reduce 

 the temperature. The annual rain is 30.7 inches 

 (English measure.) 



The observations on St. Bernard are given 

 much more in detail. The monthly means for 

 each yeax are given, and the averages for 

 each month, for the Barometer, Thermometer, 

 Hygrometer and Rain ; from which general 

 averages for the whole 10 years are obtained. 



It appears that the mean height of the Ba- 

 rometer at St. Bernard is nearly 22 English 

 inches : the mean temperature is 30*^ J Fahrenheit; 

 the mean quantity of Rain and Snow is 60 inches 

 annually; and the mean state of the hygrometer 

 (Saussure's) is 83*^1, only | a degree more moist 

 than 9,t Geneva. 



From the accounts furnished, I have calculated 

 the mean monthly averages of rain at St. Bernard 

 for 12 years,* and find them as under: — 



* Since the paper was read, I have incorporated two more 

 years rain; namely, 1828 and 1829, into the averages for 

 St. Bernard : so that the Table here presented is for twelve 

 y«ar8. 



2 G 2 



