i 82 
O 
year. The heavy line across the diagram at 487 indicates the 
mean annual shade temperature of the area. 
Had three diagrams been given, one for each of the places 
specially selected, the mean monthly variation in temperature 
between Chester and the two coast places would have been at once 
apparent, the winter being slightly colder and the summer rather 
warmer at the former, which involves a more rapid rise of temper- 
ature in spring and a more rapid fall in autumn, due to its more 
inland position removing it from the equalising influence of the sea. 
VARIATION OF THE MEAN TEMPERATURE FROM 
MONTH TO MONTH. 
From Coldest to 
Warmest Month. 
SOUTHPORT. 
LIVERPOOL 
(Bidston). 
CHESTER. 
January to February 
0 
07 
0 
07 
0 
i-6 
February to March .. 
i*8 ) 
i-8 ' 
2-4 \ 
March to April . ... 
4 6 r ll- 3 
4*9 
■ii *3 
4-6 1 12*4 
April to May 
4-9 1 
4-6 
1 
5*4 f 
May to J une 
6-4 
6*5 
6*2 
June to July 
2 6 
2*6 
2*6 
From Warmest to 
Coldest Month. 
July to August 
0*3 
0*5 
o-8 
August to September 
3-6 
3*5 
3*8 
September to Oct. ... 
7 *i ) 
6-8 
7*9 ) 
October to November 
5-0 L 1-6-4 
5*4 
• i 6’2 
4*9 r I 7 ’ 2 
November to Dec. ... 
4*3 ) 
4 *° 
4*4 J 
December to January 
07 
0-9 
1*0 
Yearly Range 
21*0 
21*1 
22*8 
A few interesting facts, of great importance to plant life and 
growth in our latitude, will become apparent on an inspection of the 
preceding table of monthly variations of temperature; first, that 
the three winter months, December, January and February, have 
almost the same mean temperature — December and February are 
the same, and January, the coldest month, only differs by about 
one degree; second, that July and August are almost the same; 
and third, that the increase in temperature for the three spring 
months (as shown in the preceding table) is n°or 12 0 , while the 
decrease in temperature for the three autumn months is 16 0 or 
