320 METEOEOLO&T. 



GOYEKXME>'T OBSEEYATORY, SYD^^:Y. 

 LinTn>B 33' 51' 41'' ; LoxGiTrDE 10= 4= 46-' ; Mag>-etic Vaeiatiox 9' 32' 45" East 



APEIL, 1S76. — GrEs-EEAi Abstbact. 



Barometer . . . Highest Reading 30-244 inches on the 10th, at 9 p.m. 



At32Taht. Lowest Reading 29461 „ on the 5th, at 1-45 p.m. 



Mean Height 29S32 



(Being 0-167 inch less than that in the same month on an average of the preceding 17 years.) 



Wind ... Greatest Pressnre 9-7 lbs. on the 9th. 



Mean Pressure ... ... 0"5 lb, 



!?>rnniber of Davs Cahn ... 



Prevailing Direction ... "VT.N.W. 

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



Temperatlire Highest in the Shade ... 870 ... On th 5th. 



Lowest in the Shade ... 52-6 ... On the 18th. 



Greatest Range 27-0 ... On the 4th. 



Highest in the Sun ... 121-7 ... On the 5th. 



HighestinBlackBoxwith j ^^^-S ... On the 4th. 

 Glass Top ...... j 



Lowest on the Orass ... 39 o ... On the 30th. 

 Mean Dinmal Range ... 15-5 

 Mean in the Shade . . . 65"8 

 (Being O'S greater than that of the same montii on an average of the preceding 17 years.) 



Humidity ... G-reatest Amount 100*0 ... On the 13th. 



Lea^t 320 ... On the 5th. 



Mean 72-7 



(Being 5-4 less than that of the same month on ao average of ^e preceding 17 years.) 



Rain... •■• ^s^nniber of Davs . . . ... 10 rain and 2 dew. 



Greatest Fall * 1-685 inch. On the 14th. 



q, , 1 -p. -J, ( 4637 inch. 65ft. above ground. 



■" (, 5-246 inch. 15 in. above ground. 



JCBeing 2-108 inches less than that of the same month on an average of the preceding 16 yeara) 

 Evaporation Total Amount ... ... 4-850 inches. 



Ozone ..■ Mean Amount 6-9 



Being 1-9 greater than that in the same month on an average of the preceding 17 years.) 

 Electricity ■ ■ . ^s'umber of Days Lightning 8 



Cloudy Sky... Mean Amount ... ... 4*5 



dumber of (Hear Days ... 4 



Meteors ... Xtmiber Observed ... 6 



Semar^s. 



The temperature of the first few days of the month was very high, and reached 

 the extreme degree for this month 87"0" on the 5th. The dry weather continued to 

 the 7th; when welcome rain began at northern stations and gradually extended south- 

 wards. It was however principally confined to the coast districts, and very Httlefell 

 west of the dividing range. The greatest fall was 19-690 inches at Port Macquarie, 

 of this 9-750 fell on the 15th. Places reached by the rain had in most cases suffi- 

 cient to reheve the drought, but to the west the drought still continues, and the losses 

 from want of water and grass are rery great ; at "Wilcannia and Upper Darling, teams 

 cannot travel for want of water. 



