286 METEOROLOGY. 
GOVERNMENT OBSERVATORY, SYDNEY. 
LATITUDE 33° 61’ 41”; LonGITUDE 104 4™ 46s; MAGNETIC VARIATION 9° 32’ 45” 
APRIL, 1877.—Gernerat ABSTRACT. 
East. 
Barometer... Highest Reading ... 30° oe inches poe the 15th, at 10 a.m. 
At 32° Faht. — Reading 29°5 mn the 26th, at 1 p.m. 
n He ama 29° 048 
Wind Greatest Pressure ... 14°6 Ibs. on the 26th. 
Mean Pressure... 0°6 lb. 
Number of Days Calm 0 
Prevailing Direction Wi 
iveviilting dibeot be Gia eis years We) 
Temperature Highest in the Shade 83:7 On the 10th. 
Lowest in the e ob On the 24th. 
Greatest Range... 11 On the 10th. 
Highest in the Sun 1441 On the 10th. 
hest in Black Box with 
Glass Top 186°5 On the 10th. 
Lowest on ‘as Grass 44°6 On the 27th. 
Mean Diurnal Ran: ge 13°7 
Meas i in the Shade.. 64:7 
Humidity ... Greatest Amount ... 1000 On the 29th. 
Least sae ap 38°0 On the 27th. 
Mean 72:2 
(B Rey +1 +} £ ++ g 24h p g 18 years.) 
Rain Number of Days 6 rain and 8 dew. 
Greatest Fall 3°752 inches. On the i 
5550 inches. 65 feet hoch shoot . 
sate inigeion 6°572 inches. 15 in. above ground. 
Evaporation Total Amount 3°855 inches. 
Ozone . Mean Amount 6°7 
(Being 1°6 gr han that in th f th 17 years.) 
Electricity... Number of _— Lightning 7 
Cloudy Sky yess An svi 
ber of ( Clear Days wat 
Meteors are Observed ... Se 
coast, between 
Remarks. 
roa a month is rather below 
Newcastle, and ext 
‘but in other 
of the Colony th 
Murray are ren low and stall falling. 
the average at Sydney. Along the 
xtending sma to the m — ns, fine 
e fall has been very small, 
