28 
J. HOPKINSON-METEOEOLOGICAL OBSEEVATIONS 
The mean temperature of the year was rather low and the mean 
daily range was small. The rather low minimum of 16°*8 was 
reached in February, but there was no high maximum. May, 
June, and November were the only months in which the temperature 
was above the average, May being very warm. Of the nine cold 
months February was relatively much the coldest, its mean tem¬ 
perature being scarcely a degree higher than that of January, while 
it should be 3° higher. The mean pressure of the atmosphere was 
a little above the average. The lowest pressure recorded at 9 a.m. 
was 28-985 ins. on 20th March, and the highest was 30*713 ins. 
on 4th January, giving a range of 1*728 in. The rainfall was a 
little below the average, but there were two very wet months, May 
and July. The air was humid almost throughout the year. The 
sky was rather cloudy. 
In the winter of 1888-89 (Dec. to Feb.) the mean pressure of 
the atmosphere was rather high, the mean temperature was rather 
low, and the rainfall was very small. In the spring (March to 
May) mean pressure was rather low, mean temperature a little 
below the average (the daily range being small), relative humidity 
great, and rainfall rather heavy (with many wet days). In the 
summer (June to Aug.) mean temperature was rather low, relative 
humidity great, and rainfall a little above the average. In the 
autumn (Sept, to Nov.) mean pressure was rather high, mean 
temperature a little below the average, relative humidity rather 
great, and rainfall rather small. Phenomena very near the average 
are not here mentioned, as usual. The deviations from the means 
of our period are as follows:— 
Diffeeence in 1888-89 eeom Means of 1877-86 at Watfoed. 
Seasons, 
Pressure. 
Temperature. 
Tension 
of 
Yapour. 
Humi¬ 
dity. 
Rainfall. 
Cloud, 
1888 - 89 . 
Mean. 
Daily 
Range. 
Total. 
Days. 
0-10. 
Winter . 
Spring . 
Slimmer. 
Autumn. 
ins. 
+*o6o 
—•073 
+•013 
+•063 
O 
— 1 ’4 
—0*1 
—°*7 
-0*3 
O 
+0-5 
— 2*6 
~o *9 
—i *4 
in. 
+•018 
+ ’018 
+ •007 
+•003 
°/ 
1 /o 
+ 2 
+ 6 
+ 5 
+ 4 
ins. 
—3*21 
+ i *37 
+0*96 
-1 ‘54 
— 6 
+ 15 
— 5 
— 7 
+0*9 
— 0*1 
+o ’3 
Januaey.— Cold and cloudy, with a very humid atmosphere of 
high pressure, and a small rainfall with very little snow. The days 
on which rain fell were 8th to 13th, 19th to 21st, and 28th to 31st, 
there being thus three dry and three wet periods. Several days 
between 20th and 28th were foggy. Coldest day 6th, mean 22°*1 ; 
warmest day 26th, mean 43°*7. Min. below 32° on 16 days, 
below 22° on 4 (1st, 2nd, 6th, and 7th); max. above 42° on 12 
(below 32° on 4th, 5th, and 6th). 
Febeuaey.— Yery cold, of average cloudiness, with a rather dry 
atmosphere of average pressure, and a rather small amount of rain, 
