140 



Notes on the Meteorology 



gave 30'28(). The lowest reading of the barometer, reduced 

 to sea level and 32° Fahr v took place on 28th December, 

 1881, viz., 29*600, with squalls from N. followed by a 

 thunderstorm. As a rule the barometer at Omeo stands 

 lower with the winds from N.N.E. to N.N.W., and higher 

 from S.S.W. to S.E., although frequent departures from this 

 rule occur. 



Ji 



Dec. .. 30040 

 Jan. .. 29-683 

 | (Feb. .. 30-053 



Mean 

 Summer 



29-925 



§ (March 30-120 

 £ \ April 30-153 

 3 (May .. 30-113 



Mean 

 Autumn 



30-128 



S3 (June.. 30'136 ! no (Sept... 30-070 

 a \ July . . 30-210 ! I \ Oct. . . 30-090 

 k (Aug. . . 30-266 | a (Nov. . . 29*920 



Mean 



Winter 



. . 30-214 I Mean Spring 30426 



The mean pressure during winter is greatest, and during 

 summer least. 



The following table shows the mean range in pressure for 

 the different months, and also that for the seasons : — 



December . . -656 

 January . . '616 

 February .. -685 



March .. -610 

 April .. .. -506 

 May .. .. -953 



June .. .. -860 

 July .. .. -826 



August .. -826 



September . . -825 

 October . . -595 

 November . . -746 



Mean Season -645 



Mean Season -689 



Mean Season -837 



Mean Spring -722 



This gives a mean monthly range for the year of "717. 

 The rule for decrease of pressure with altitude would seem 

 to be subject to slight variations caused by lateral pressures, 

 aerial currents sweeping up the narrow valleys, and by 

 thermal influences of a local character, so that the difference 

 of surface configurations and surroundings of two stations 

 on the same parallels of latitude, and at the same altitude, 

 may differ slightly in their barometric pressures. 



The following records, kindly supplied by Mr. William 

 Boustead of M ount St. Bernard, are very interesting, as show- 

 ing the character of the climate in the higher regions of 

 Victoria during winter. Unfortunately no records of maxi- 

 mum or minimum temperatures are available, although the 

 ten a.m. observations of thermometer in the shade are 

 extremely valuable. From this and other data, collected 

 when travelling over different parts of the Alps, the follow- 

 ing abstract of the climate at elevations of 5000 to 6000 feet 

 is obtained. The mean winter temperature at Mount St. 



