PROCEEDINGS—PERTHSHIRE SOCIETY OF NATURAL SCIENCE. CXXXV1I 
lowest 28° F., on 9th May. It will thus be seen that the thermometer 
never reached 8o° F. during the whole summer. On the other hand, 
it frequently fell below the freezing point at night. 
The rainfall for the summer months of the two years was as 
follows :— 
1901. 1902. 
May, 
0.65 inches. 
1.91 inche 
June, - 
- 4.T0 „ 
I -93 v 
July, 
1-13 
2 - 3 ° 
August, 
4-20 ,, 
3-49 „ 
September, 
1.84 „ 
2.19 
October, 
1.80 ,, 
I - 5 I 
The total rainfall during the summer months of 1902 was thus 
13.33 inches, as compared with 13.72 inches in 1901, or .39 inches 
less. The greatest rainfall in twenty-four hours was 1^49 inches on 
18th August. No rain fell during the week ending 5th July. 
The following table brings out in a striking manner the peculiar 
conditions of the past season as regards cloud and sunshine. The 
first column shows the number of days in each month on which the 
sky was entirely covered with cumulus clouds at 9 a.m. The 
second column shows the number of days when the sky was more 
than half, but not quite, obscured. The third column shows the 
number of days when the sky was cloudless at 9 a.m.:— 
Entirely 
Clouded. 
Half- 
Clouded. 
Clear. 
May, - 
10 days. 
9 days. 
5 da ys 
June, 
14 „ 
6 „ 
4 j, 
July. - 
11 „ 
6 „ 
4 „ 
August, - 
11 „ 
9 » 
6 „ 
September, - 
13 „ 
4 ,, 
6 „ 
October, - 
13 „ 
2 „ 
7 „ 
It will thus be seen that out of the 184 days of the summer, 72 
were entirely clouded in the morning, and 36 were half-clouded or 
more, while only 32 were quite clear. In these observations no 
account is taken of cirrus clouds, or light haze. 
In connection with these meteorological data, it is interesting to 
note the comparative figures of the death-rate in Perth during the 
corresponding period. The figures, per 1000 of the population, were 
.as follows :— 
May, - 
1901. 
16.8 
1902. 
20.5 
June, 
- i 5-5 
19.4 
July, - - - 
18.2 
14.2 
August, - 
16.6 
15-9 
September, - 
i 3-7 
13-9 
October, - 
16.1 
18.6 
The mean death-rate during the summer six months of 1902 was 
