of the Australian Alps. 



137 



The atmometric records are only available from October, 

 1883, to November of the present year ; and the resulting 

 figures are therefore an approximation only, yet sufficient, I 

 think, to indicate that spontaneous evaporation is in excess 

 of rainfall at Omeo. A noticeable instance of evaporation 

 over a large surface is furnished by Lake Omeo, which in 

 1882 was a sheet of water 2 miles long by 1 mile broad, and 

 with an average depth of probably 2 feet 6 inches, or less. 

 This lake became dry during the present year, and this 

 accords with the following approximate results from the 

 evapometer at Omeo, e.g., 30 J inches per annum. It must 

 be borne in mind, however, that the evaporation from a 

 sheet of water freely exposed to the accelerating influence of 

 summer winds, would be greater than that from a situation 

 sheltered by high ranges. It is a remarkable fact that 

 during seasons of severe frosts many small creeks and water 

 channels become dried up thereby. 



December . . 3'o6 

 January . . 5o0 

 February .. 4-68 



March 



April 



May 



.. 2-80 

 .. 1-10 



.. '80 



June 

 July 



August 



.. -50 

 .. -30 

 .. '75 



September . 

 October 

 November . 



. 2-50 

 . 4-28 

 . 3-75 



Total for season 13*74 





4-70 





1*55 





10-53 



Winds. 



The following table exhibits the average number of days 

 the wind blew from the different points of the compass, and 

 the mean velocity in miles per hour for each month of the 

 year, and the mean velocity for each point for different 

 seasons : — 



