( YI  ) 
Diagram  representing  the  Annual  Rainfall  at  Greenwich 
during  each  Year  for  Eighteen  Years,  from  January  1,  1865,  to 
December  31,  1882 — in  continuation  of  Diagram  II.  in  vol.  ii.  of 
this  Journal  (Second  Series),  Part  I.  p.  70. 
Id. 
36 
33 
34 
33 
32 
3i 
3° 
29 
28 
27 
26 
25 
24 
23 
22 
21 
20 
19 
l8' 
17 
l6 
15 
The  mean  rainfall  at  Greenwich  for  the  period  (1865-82)  was 
26'2  inches.  The  largest  rainfall  was  in  the  year  1879,  and 
amounted  to  31  '3  inches.  The  lowest  was  18‘5  inches,  and 
occurred  in  1870.  The  extreme  amount  of  range  was,  therefore, 
12-8  inches. 
Fall  of  Rain  in  Inches  at  Greenwich. 
1865 
1866 
1867 
1868  1869 
1870 
1871 
1872  1873 
1874  1875  1876  1877 
1878  1879  1880  1881  1882 
29-0 
}0"1 
28-4 
25-2|  24-0 
18-5 
22*J 
jo*o  29  *4 
1 
20*0  28*2  24*2  26*9 
I I 
29*2  91*9  29*8  2J*2  25*2 
With  reference  to  the  rainfall  in  1872,  Mr.  Glaisher  reports 
that  the  fall  in  January  was  large,  being  as  much  as  1-7  in.  in 
excess,  but  in  February  less  rain  than  the  average  fall  was  mea- 
sured to  the  extent  of  0-8in.  In  March  the  amount  again  exceeded 
its  average,  but  only  to  the  amount  of  0’5  in. ; and  in  the  next  three 
months  the  falls  were  slightly  in  defect  in  April  and  June,  but  in 
excess  to  almost  the  same  amount  in  May.  In  July  the  amount 
was  nearly  the  same  as  its  average,  in  August  slightly  in  excess, 
but  in  September  as  much  as  1-0  in.  in  defect.  The  rainfall,  how- 
ever, in  these  months  was  much  heavier  in  the  Northern  than  in 
