37 2 Marshall Ward.— On a lily -disease . 
six with a fall of less than *009 in., and one when it exceeded 
0-5 in. 
Taking the month of July. In 1886 rain fell on fourteen 
days (including four with less than -009 in., and none with so 
much as 0*5 in.). In 1887 there were eleven days on which 
rain fell (including two days when the fall was less than 
•009 in. — on none did it reach 0*5 in.). Whereas in July, 1888, 
we had twenty-eight rainy days (only three of which registered 
so little as *009 in., while on five of them the fall exceeded 
o*5 in.), 
Then again in August, there were twenty-four days in 1886 
when rain was registered (but sixteen of these yielded less 
than -009 in., and none so much as 0-5 in.). In 1887 there 
were twelve rainy days (including four with less than -009 in., 
and one with more than 0-5 in.). But in August, 1888, we 
had twenty-two rainy days (and only seven of these showed 
so little as 0-009 i n -> while on two days more than 0-5 in. fell). 
It has not seemed worth while for the present purpose to 
give further details than those above, but I may say that the 
daily register quite bears out these results. 
It is a well-known fact that the estimation of the relative 
amounts of sunshine and cloud, blue sky, haze, etc., is a very 
difficult matter; nevertheless some indication of the state of 
affairs seems to be obtained by comparing the details for the 
months and years given. 
I have made out that in June of 1886, 1887, and 1888, re- 
spectively, the total amount of cloud observed (two observations 
daily) was as follows, 600 being the possible maximum — i. e. 
if the sky had been completely overcast at every observation, 
the amount would have been registered as 600. 
In June 1886 the amount of cloud = 450, and there were 
twenty-seven days on which blue sky was registered as seen 
during some part of the day. 
In June 1887 the cloud = 376, blue sky being registered 
for twenty-three out of the thirty days. 
In June 1888 the number recording cloud rose to 578, and 
blue sky was registered for sixteen days only out of the thirty. 
