328 METEOEOLOGT. 



aOVERNMENT OBSERVATORY, SYDNEY. 



Latititdb 33° 51' 41" ; Longitude lOb 4" 46« ; Magnetic Variation 9° 32' 45" East. 



DEOEMBEE, 1876.— G^eneeal Absteact. 



Barometer... Highest Reading... ... 30'106 inclies on the IStli, at 10 a.m. 



At 32° Falit. Lowest Reading 29-251 „ on the 26th, at 2 a.m. 



Mean Height 29785 



(Being 035 inch greater than that in the same month on an average of the preceding 17 years.) 



Wind •.. Greatest Pressure ... 14*6 lbs. on the 16th. 



Mean Pressure ... .. 0'9 lb. 



ISTuniber of Days Cahn ... 



Prevailing Direction ... E.N.E. 



(Prevailing direction during the same month for the preceding 17 years, N.E.) 



Temperature Highest in the Shade ... 88-3 On the 15th. 



Lowest in the Shade ... 53*4 On the 4th. 



Greatest Range ... ... 24-5 On the 14th. 



Highest in the Sun ... 126-9 On the 16th. 



Highest in Black Box with ) one?" r\ ^.i tcli 

 }^T m > 206 o . On the ISth. 



(xlass Top ...... j 



Lowest on the Grass ... 49-1 On the 2nd* 



Mean Diurnal Range ... 14*3 



Mean in the Shade ... 70-0 



(Being 0-6 greater than that of the same month on an average of the preceding 17 years.) 



Humidity ... Greatest Amount... ... 94*0 On the 12th. 



Least ... 36-0 On the 27th. 



Mean 68-8 



(Being 11 greater than that of the same month on an average of tlie preceding 17 years.) 



Rain-. ••• N'umber of Days ... ... 9 



Greatest Fall ^ 0-290 inch. On the 27th. 



rn , , -c, -,, C 0-228 inch. 65 ft. above ground. 



'■' \ 0-453 inch. 15 in. above ground. 



(Being 1'857 inches less than that of the same month on an avei-age of the preceding 17 years.) 



Evaporation Total Amount ... ... 8-566 inches. 



Ozone ••• Mean Amount ... ... 6-1 



(Being 16 greater than that in the same month on an average of the preceding 16 years.) 



Electricity... Number of Days Lightning 6 



Cloudy Sky... Mean Amount- ... ... 5 6 



Number of Clear Days ... 4 



Meteors ... Number Observed ... 4 



Memarks. 



The temperature this month has been high, and the barometer rather aboye the 

 average. Rain has been light generally, except in New England where it has been 

 abundant. To south and west inland the continued dry weather is severely felt. 



