LECTURE ON CLIMATE. 
7 
temperature being 82 deg. Showers may be ex- 
pected with misty mornings. The aurora al- 
ready mentioned was seen in this week in 1859. 
October,— Temperature : Mean maxi- 
mum shade.. 84*2 
Mean temperature 71 ‘6 
For the last two years October has been 
gloomy and wet ; in 1858 over twelve inches of 
rain fell in twenty days ; and in 1859 the great 
hailstorm occurred which did so much damage 
in and around Brisbane. Squalls with thunder 
and lightning may occur. 
Greatest diurnal range 36 8 (from 54 to 90*8) 
Mean diurnal range 27*3 
November. — Temperature: Mean maxi- 
mum Bhade.. 83*3 
Mean temperature 70-7 
The weather this month has been srloomy and 
squally ; rain, thunder, and lightning— the nights 
are still occasionally cold. 
Greatest diurnal range 34*2 (from 54'8 to 89) 
Mean diurnal range 25 8 
December.— Temperature: Mean maxi- 
mum shade . 85 7 
Mean temperature 73*5 
December is frequently cool until towards the 
end, when summer commences; often fine 
pleasant weather with starlight nights and heavy 
dews. 
Greatest diurnal range 30*6 (from 54 to 84*6) 
Mean diurnal range 22 8 
Mean maximum heat of spring 83*8 
Mean temperature 719 
Mean greatest diurnal range 33*9 
Mean diurnal range 25*3 
Summer. — This season comprises vhe time be- 
tween Dec. 22ud and March 20tb. 
January. — Temperature: Mean maximum 
shade 88*7 
Mean temperature 77*8 
Summer is now fairly set in, w r eather hot and 
oppressive, often with rain squalls, thunder and 
lightning. 
Greatest diurnal range 31*9 (from 67*6 to 99*5) 
Mean diurnal range 20*7 
February. — Temperature : Mean maxi- 
mum shade.. 87*3 
Mean temperature 78 2 
This is frequently the hottest month of the 
year ; heavy squalls with thunder and rain are 
common, and strong easterly winds. 
Greatest diurnal range 30‘8 (from 63*6 to 94*4) 
Mean diurnal range 19*9 
March. — Temperature : Mean maximum 
shade 85*7 
Mean temperature 76 2 
Summer ends on the 20th ; the heat though 
less than last month is still considerable. Easterly 
winds prevail with frequent showers. 
Greatest diurnal range 27 6 (from 61*2 to 88*8) 
Mean diurnal range 20*7 
Mean maximum heat of summer ...... 87*2 
Mean temperature 77*4 
Mean greatest diurnal rauge 30*1 
Mean diurnal range 20 4 
Autumn. — Comprised between March 20th, and 
June 24th :■ — 
April — Temperature: Mean maximum 
shade 81*6 
Mean temperature 71*8 
At the beginning of this month we may expect 
clouds and showery unpleasant weather ; towards 
the end the S.W. weather, with heavy dews and 
positive electricity commences. 
Greatest diurnal range.. 33*0 (from 48*1 to 81*1) 
Mean diurnal range .... 21‘9 
May. — Temperature : Mean maximum 
shade 77*9 
Mean temperature 63*3 
Fine cool healthy weather ; splendid clear star- 
light nights, heavy dews, and occasional hoar 
frosts. For three years the climate has been very 
equal this month, and less rain fallen, than in 
any month in the year. 
Greatest diurnal range. . 34*9 (from 42 1 to 77) 
Mean diurnal range .... 26*6 
June. — Temperature : Mean maximum 
shade 70*1 
Mean temperature 58 2 
As last month, S.W, weather may be expected, 
with strong positive electricity, bright cold star- 
light nights, heavy dews, and occasional hoar 
frosts. 
Greatest diurnal range. . 38*7 (from 41*4 to 80*1) 
Mean diurnal range .... 22*5 
Mean maximum heat of Autumn 76*5 
Mean temperature. 64*4 
Mean greatest diurnal range 35 5 
Mean diurnal range 23*6 
Winter. — Comprising the time between June 
24th, and September 23rd. 
July. — Temperature : Mean maximun 
shade 71*6 
Mean temperature 57*1 
As the last months, cold seasonable beautiful 
S.W. weather may be expected, with little rain, 
heavy due, and foggy mornings, and occasional 
hoar frosts. 
Greatest diurnal range 41*1 (from 34*3 to 75*4) 
Mean diurnal range 29 0 
August. — Temperature: Mean maximum 
shade 72*3 
Mean temperature 59*8 
The instruments show an increase of one or two 
degrees of temperature, and seem already to in- 
dicate the approach of spring ; the hoar frosts 
are gone,. though the brilliant starlight nights, 
and heavy dews, and occasional foggy mornings, 
continue. 
Greatest diurnal range 40*2 (from 43 to 83*2) 
Mean diurnal range 24*0 
September — Temperature: Mean maximum 
shade 81*1 
Mean temperature 66*4 
The brief winter finishes on the 23rd. Still 
warmer than last month. Wind chiefly S.W. in 
the morning, but the N.E. sea breeze now sets in 
in the afternoon, followed by calm nights. 
Greatest diurnal range 36 5 (from 43 to 79*5) 
Mean diurnal range 28*7 
