240 METEOROLOGICAL OBSERVATIONS. 
GOVERNMENT OBSERVATORY, SYDNEY. 
LatiTUDE, 33° 51’ 41” ; Lonartupe, 10° 4’ 46” ; MAGNETIC VARIATION, 9° 25’ 2” East. 
DECEMBER, 1879.—GeEnEeraL ABSTRACT. 
Barometer... Highest Reading ... eee on inches bo the 30th. 
At 32° Faht. Lowest Reading ... ree a, » on the 21st. 
Mean Height ‘60 re 29-668 
‘Nat n me s. - ‘Ss +1 4+} 4 ~. 4+} +h 0 vears.) 
Wind .. Greatest Pressure .. ... 25-9 on the Ist. . 
Mean Pressure reas |) 
Number of Days Calm ... 0 
Prevailing Direction sears yee 
(Pi ling di ‘4 3 ing th th ¢, he p 20 5 ra EN.E) . ~ 
Temperature Highestinthe Shade ... 96:5 on the Ist. 4 
Lowest in the Shade ... 55°6 on the “ 
Greatest Range ... 380°3 on the Ist. 
Highest in the Sun ... 150°2 on the Ist. 
Lowest on the Grass ... 49°3 on the 9th. i 
Mean Diurnal Range ... 12°7 . 
ot in the see de a 682 | 
(PR, 47 rt tah, a: 90 vears.) | 
Statlittte os Greatest Amount ... ... 90°0 on the 25th. 4 
Least w+. ss 540 on the Ist. 4 
Mean ; 
( Gy 2. g ra 4} 4 rt 4h th £ +} q oO vears. 
Rain... ». Greatest Fall sy w 0432, inches on ‘dis oath. | 
Number of Days ... e. 15 rai won 
Total Fall 1345 py 65 fect Ratt sound 
: Seah 1814 inches. 15 in u , 
= Evaporation. .Total Amount... ..- 6099 inches. 
Oz _— ean seeseeataesk is Se aw fe 
° + ve c Yin 19 vears.) 
ees. Number of gs Lightning 3 
6 
Cloudy Sky... a Am ee 
mber of “Clear Days aD | , 
Meteors... cored observed ... ae 
: Remarks. i 
Mean temperature is 1:4 less than the ote but on the Ist of the month por 
maximum rose to 96°5. The month has bee n dry inland, but not windy. ¢ be 
coast and mountain districts there has been this month a fair pay! of rain, 
Pot : pater. 
viest being in the northern coas ng & maximu wis por 
at P In the western river districts there has been little y beet 
none at og The temperature has been generally moderate, and 
the average for December. Remarkable thunderst passed over on 28th; 87 
looked like a winter westerly wind. pata 
