Xlll. 



SEPTEMBER, 1874. 

 Private Observatory, Hobart Town. 



s * 



*h 



*3 <D 



o ,2 



oBB "g 



.3 •* a 5 



g .3*8- g 



'3 e8 .^ o a> 



J-i > f * o 



*" a^g g 



03 .. 5 P 



to a O rt ^5 



I 5 a § o 



I si: -s 



Si2 * 



Barometer mean, 29740in., being 0'033in. below the average. 



Temperature mean, 5221°, being 218 below the average. 



Solar intensity mean, 8670°, being 10-42° below the ditto. 



Dew point mean, 41 9°, being 034 below the ditto. 



Humidity of air mean, 7010, being "06 per cent, below the ditto. 



Elastic force of vapour mean, "276, being 004 per cent, below the ditto. 



Total amount of rain, 175in., being 0'45in. below the ditto. 



Increase of spontaneous evaporation on rainfall, 59in. 



Mean amount of ozone, 6'40, being 152 of chromatic scale below ditto. 



Electricity active all through the month, 43 positive, 15 average, and 2 nil on the 

 3rd. 



Strong and vivid lightning on the 3rd, without thunder, from S.S.W. 



Heavy fall of snow on the 6th; covering the Mountain and low hills, and which was 

 never absent from Mount Wellington during the month. 



FRANCIS ABBOTT. 



