METEOROLOGY. 3 



GOVERNMENT OBSERVATORY, SYDNEY. 



, atitude 33° 51' 41" ; Longitude 10^ 4 m 46 s ; Magnetic Variation 9° 32' 45" East. 



MAECH, 1875— General Abstract. 



Barometer--- Highest Reading 30092 inches on the 25th, at 9 p.m. 



., onoru Lowest Reading ... ... 29'507 ,, on the 14th, at 3& 4 p.m. 



At 32 *ant. MeanHeight 29-857 



(Being 0-040 inch less than that in the same month on an average of the preceding 16 years.) 



Wind ... Greatest Pressure ... 11*5 ibs. on the 1st. 



Mean Pressure ... ... 0*7 ib. 



Number of Days Calm ... O 



Prevailing Direction ... N.E. 

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



Temperature Highest in the Shade ... 88*1 On the 3rd. 



Lowest in the Shade ... 599 On the 20th and 21st. 



Greatest Range ... ... 23*5 On the 3rd. 



Highest in the Sun ... 1265 On the 8th. 



Hi Glfss in Top aCk B0X With ] 196 " 9 0n the 3rcL 

 Lowest on the Grass ... 50*6 On the 21st. 

 Mean Diurnal Range ... 10*8 

 Mean in the Shade ... 69*6 



(Being 06 greater than that of the same month on an average of the preceding 16 years.) 



Humidity ... Greatest Amount 1000 On the 1st and 14th. 



Least 45-0 On the 3rd. 



Mean 81*2 



(Being 49 greater than that of the same month on an average of the preceding 16 years.) 



Rain... ... Number of Days ... ... 21 rain and 2 dew. 



Greatest Fall 1953 inch. On the 2nd. 



m , i t, ii ( 4*138 inches. 65 feet above ground. 



" \ 6731 inches. 15 inches above ground 

 (Being 1-058 inch greater than that of the same month on an average of the preceding 16 years.) 



Evaporation Total Amount 4*087 inches. 



Ozone ... Mean Amount 55 



(Being 0-6 greater than that in the same month on an average of the preceding 15 years.) 



Electricity Number of Days Lightning 2 



Cloudy Sky Mean Amount 6*5 



Number of Clear Days ... 2 



Meteors ••■ Number Observed ... O 



Remarks. 



The southerly weather which commenced end of last month continued until 

 about the 3rd, the floods being generally to the N.E. portion of the Colony, ruining 

 many farmers, arid causing the death by drowning of the Speaker of the Legislative 

 Assembly, on the Paterson River. The latter part of the month has also been wet 

 and very disagreeable, the rainfall being 1*058 inch greater than the average of the 

 last 16 years, — and 21 days out of the month wet in Sydney. 



