METEOEOIOGT. 323 



aOYERNMENT OBSERVATOEY, SYDNEY. 



Latitudh 33° 51' 41" ; Longitude 10'' 4'" 46' ; Magnetic Variation 9° 32' 45" East. 



JULY, 1876. — GrENEKAL Absteact. 



Barometer . . . Higliest Reading 80-313 inches on the 31st, at 8 a.m. 



At 32° Faht. Lowest Reading 29-481 „ on the 27th, at 2 a.m. 



Mean Height 29-945 



(Being 007 inch greater than that in the same month on an average of the preceding 17 years.) 



Wind ... Greatest Pressure ... 17*4 lbs. on the 2l8t. 



Mean Pressure ... .,. 1-5 lb. 



Numbers of Days Calm ... 



Prevailing Direction ... W.N.W. 

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



Temperature Highest in the Shade ... 61-9 On the 11th. 



Lowest in the Shade ... 39-1 On the 31st. 



G-reatest Range 22-6 On the 31st. 



Highest in the Sun ... 99-9 On the 9th. 



^llastToif'''^'^.'''''^??!)^^^"^ On the 24th. 

 Lowest on the Grass .,, 33-3 On the 31st. 

 Mean Diurnal Range ... 11-3 

 Mean in the Shade ... 52-8 



(Being 0'5 greater than tliat of the same month on an average of the preceding 17 years.) 



^Humidity ... Greatest Amount 100-0 On the 13th, 17th, and 22nd. 



Least 52-0 On the 29th. 



Mean 80-4. 



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



Kain... ... Number of Days... ... 18 rain and 5 dew. 



G^reatest Fall ... ... 1-675 inches, on the 14th. 



m , , -p 11 ( 4*370 inches. 65 ft. above ground, 



'"(_ 6-741 inches. 15 in. above ground. 

 (Being 2- 602 inches greater than that of the same month on an average of the preceding 17 years.) 



Evaporation Total Amount 2-331 inches. 



Ozone . . . Mean Amount 7-8 



(Being 2-7 greater than that in the same month on an average of t]ie preceding 15 years.) 



Electricity ■ . . JN'umber of Days Lightning 5 



Cloudy Sky... Mean Amount ... ... 5-9 



Number of Clear Days ... 3 

 Meteors ■ . ■ Number Observed ... 7 



Hemarlcs. 



The month has been wet and windy at Sydney, and generally along the coast 

 districts. In the western districts the rainfall, if any, has been small, and at some 

 places the drought still continues. On the 13th and 14th a strong easterly gale, with 

 deluges of rain, came on, and extended from Queensland right down the coast to Eden ; 

 in some parts of Queensland the floods were higher than ever before known. There 

 were high floods in the Clarence (here the greatest on record, the city was ahnost all 

 under water) and Macleay Rivers on 15th, and moderate floods in the Hunter on 

 16th. There was a terrific fall of rain in New England, and at Tcnterfield upwards 

 of nine inches fell m one day. There was a partial return of this weather on 21st 

 and 22ud. At 4 a.m of 19th a very severe shock of earthquake in Now Zealand. 



