NOTES ON THE CLIMATE OF VICTORIA. 
Table IV. — Temperature of Solar and Terrestrial Radiation'" 
AT Melbourne during a period of Thirteen Years ( 1859 - 1871 ). 
Months. 
RADIATION. 
Highest 
Solar. 
Lowest 
Terrestrial. 
January 
160-0 
37-0 
February 
149-0 
36-0 
March 
146 0 
3{>*0 
April 
151-7 
29-4 
May 
142-6 
27-2 
June 
107-5 
25-0 
July 
102-2 
22-0 
August 
114-8 
24 0 
September 
120-2 
28 0 
October 
135-8 
25 -9 
November 
141-1 
32 0 
December 
151-8 
35-0 
Greatest 
Difference. 
Means of 
Greatest 
Differences. 
123-0 
101*8 
113-0 
98-7 
111-0 
96-3 
122-3 
91-3 
115-4 
81-5 
82-5 
72-1 
80-2 
73 2 
90-8 
78-7 
92-2 
85-6 
109-9 
94-7- 
109-0 
96-9 
116 8 
102 5 
Greatest difference during the above period .. .. 138 0 
From these tables the following facts may be derived : — The 
mean annual temperature of Melbourne is 57°.G, which approxi- 
mately represents that of the colony generally, namely, 56°.8. 
The highest mean occurs at Portland, Gabo Island, and Sandhurst 
(the two former being coast stations), while the lowest occurs at 
Daylesford and Ballarat. There can be little doubt that the high 
means at Portland and Gabo Island arc caused l)y the neighbour- 
hood of warm ocean currents, for although the annual mean 
temperature of most stations on the coast are high, these, and 
more especially Portland, appear above the average, while at 
Sandhui'st the temperatures range higher during the summer 
months than at any other inland station. The low mean at 
Daylesford and Ballarat is also due to the altitude of the stations 
on the dividing range, the foi rner being 2090, and the latter 1438 
feet above the sea. 
The annual mean temperature which obtains at Melbourne places 
it within the same isotherms in the Southern Hemisphere as Lisbon, 
Madrid, Marseilles, Florence, &:c., in the Northern Hemisphere. 
The ranges of temperature between summer and winter months, 
however, appear to be much less than at most of these places, and 
a more equable temperature may be assumed to exist in Mel- 
bourne than at similar isotherms in the south of Europe. As 
regards the extremes and range of temperature at the various 
localities, Table II. informs us that the highest temperatures in 
