306 METEOROLOGICAL OBSERVATIONS. 
GOVERNMENT OBSERVATORY, SYDNEY. 
LATITUDE 33° 51’ 41”; LonaiyuDE 104 4™ 46*; MAGNETIC VARIATION 9° 32’ 45” East. 
OCTOBER, 1878.—GENERAL ABSTRACT. 
Highest ee ... 80°146 inches on the 5th at 10 a.m. oe | 
At 32° Faht. Lowest Reading ... _.. 28°967 inches on the 10th at 3 p.m. 
Mean Height das ... 29°788 inches 
(Being 0°050 inch less than that in the same month on an average of the preceding 19 years.) 
Wind... ... Greatest Pressure .. ot as Ibs. on the 11th and 15th. 
Mean Pressure nn 1 Ib. 
Number of Days Calm - a: 
Preva ming 2 appea ou Lowy E. 
s (Pr uiling di th for the preceding 19 years, N.E.) 
Temperature Higbet inthe Shade ... 86°5 on the 30th. 
ee in the oad ade ae ef 7 on the sari 
on 
Higheat i in the "Sun * 439° 0 on Es 14th and 29th. 
Be ge in Black Box with 
. 198°3 on the 29th. 
Lowest on es Grass .... 37°7 on the 17th. 
Mean Diurnal Range ..._ 15°4 
se Mean in the Shade poem vou! 
(Being 0°1 greater than that of tl tl f the preceding 19 years.) 
Humidity ... Greatest Amount... ... 100°0 on the 28th. 
Least. Se ms ... 29°0 on the 14th. 
Mean ‘i ia a 686 
(Being 01 less th thot at +h aL g eal. p a: g 19 years.) 
Rain... .... Numberof Days... .... 10 rain and 3 dew 
Greatest Fall ce "0520 inches on the 208 “a 
1°859 inch. 65 feet above ground, 
Total Fall... = ~Poor segs 4 ge web 200 | 
(Being 0°242 inch 1. } that of tl 41 g £41 p at. g 19 years.) 
Evaporation Total Amount... ...  4°872 inches. 
Ozone. . Mean Amount ... PE be 
(Dat. ‘ 1 ig pe: om “oa 42. 1° waoare ) 
Electricity ... Number of me Lightning 8 
Cloudy Sky... Mean Amon 6% 
umber of ( Clear Days See 
Meteors ... Number Observed cette 
Ridierks 
This ooh terne thermometer are very close to the average for 19 
os ban Coast rain have been ht, and the mountains and western slopes he¥® 
fine rains; but we ne i light, : 
the fall has been 
