Marshall Ward . — On a lily -disease. 371 
If now we examine this table, it will be seen that it bears 
out’ generally the truth of my personal observations on the 
weather of the months named in i888 ; as compared with 1887 
and 1886. 
In the first place the barometric pressure was lower in June 
and July of 1888 than in the same months of 1886 and 1887, 
though this is not quite the case in August. 
On looking at the wet and dry-bulb thermometer, we notice 
that in 1888 the readings of the dry-bulb were low in June, 
and markedly so in July and August, as compared with the 
corresponding months in 1886-7. As regards the wet-bulb, the 
same fact comes out — the readings are low. The dew-point 
is also relatively low ; but whereas the dew-point throughout 
shows considerable similarity, the differences of temperature 
as indicated by the dry-bulb are, as said, very great. 
The temperature columns are again instructive, especially 
as contrasted with 1887, both minima and maxima being dis- 
tinctly low, for July and August especially. The same with 
solar radiation, a rough measure of the quantity of heat and 
light derived from the sun, not only are the maxima lower in 
1888, but the averages are markedly so. 
I have also made out some further details from the daily 
tables. In June 1888 the maximum temperature was below 
6o° F. on seven days, whereas in 1887 this only occurred 
twice, and in 1886 five times. In July 1888 it was below 
6o° F. on five days, on none in 1887, and on one only in 
1886. In August this was the case on four days in 1888, but 
never the case in 1887 or 1886. 
When we come to the rain-fall, the generalisation is 
strikingly illustrated, especially in July. Moreover, I have 
satisfied myself that this holds in detail, taking day by day. 
In June 1886, for instance, there were 14 days on which rain 
fell (including four days when the rainfall was less than *009 
in., and one day on which more than 0*5 in. fell). In the same 
month in 1887, rain fell on eight days (including four days 
with less than *009 in., and one with more than 0-5 in.) ; and 
in 1888 there were twenty-two rainy days in June (including 
