ABSTRACT OF THE METEOROLOGICAL OBSERTATIONS 

 TAKEN AT THE SYDNEY OBSERVATORY. 



Latitude 33° 51' 41"; Longitude 10 h 4 m 46*; Magnetic Variation 9° 32' 45* East. 



JANUABY, 1875. — General Abstract. 



Barometer ... Highest Eeading ... ... 29*993 inches on 27th, at 7 and 8 i.m. 



. , qo o T7 r, f Lowest Reading ... ... 29*173 „ on the 1st, at 5 p.m. 



AtdZ Jjant. Mean Height 29706 



(Being 0069 inch less than that in the same month on an average of the preceding 16 years.) 



Wind ••• Greatest Pressure... ... 13*5 lbs. on the 7th and 13th. 



Mean Pressure ... ... 0*7 ft. 



Number of Days Calm ... 



Prevailing Direction ... E.N.E. 



(Prevailing direction during the same month for the preceding 16 years, N.E.) 



Temperature Highest in the Shade ... 97*0 On the 29th. 



Lowest in the Shade ... 59*4 On the 3rd. 



Greatest Range 31*5 On the 29th. 



Highest in the Sun ...136-0 On the 29th. 



^GlasJ To^^ B ° X Wlth } 213 ' 2 0n the 29th - 

 Lowest on the Q-rass ... 51*7 On the 3rd. 

 Mean Diurnal Range ... 14*5 

 Mean in the Shade ... 727 



(Being 1-7 greater than that of the same month on an average of the preceding 16 years.) 



Humidity ••• Greatest Amount .. . ... 100-0 On the 8th. 



Least 36-0 On the 13th. 



Mean 71*0 



(Being 1-9 less than that o'f the same month on an average of the preceding 16 years.) 



Rain Number of Days 10 rain. 



Greatest Fall 0*292 inch. On the 9th. 



Tot 1 Fall $ 0-549 inch. 65 feet above ground. 



" X 1*145 inch. 15 inches above ground. 

 (Being 3 - 085 inches less than that of the same month on an average of the preceding 16 years.) 

 Evaporation Total Amount ... ... 8*622 inches. 



Ozone ... Mean Amount 5*9 



(Being 1*5 greater than that in the same month on an average of the preceding 15 years.) 

 Electricity... Number of Days Lightning 8 



Cloudy Sky Mean Amount 60 



Number of Clear Days ... 3 



Meteors ••• Number Observed 



Remarks. 



The rainfall throughout the Colony has been small during the month. Thunder- 

 storms were prevalent — but in many cases no rain fell. On the 7th, at Cape St. 

 George Light-house, balls of bluish fire seen on the lightning conductors. Hot wind 

 at Deniliquin on 5th ; and during portion of the month, great haziness in atmosphere 

 observed at most stations. 



