vill Proceedings. 
1869, by the late Mr. Glaisher, in which, from 1815 to 1840, both 
exclusive, the only years having a total fall of 30 in. and above are :— 
ASA Woscheatihs hae ncasesnaasenesasess 31°53 in 
TSDE oe oe ea. sea istics oseack woacctds 32°98 in 
PES OM Sieesee oa satckes terdcawsasbosat 31:14 in 
11f3 27 an qee Seeetoee Ree ney cater 34°48 in 
MSS GAM estes tava en bale sacdacbudek tes 81°01 in. 
In this paper, on p. 112, Mr. Glaisher says :—‘“‘ The series is mainly 
that of the Royal Observatory, Greenwich, which began on January Ist, 
1815, my investigations closing with the end of the year 1869. During 
this period the fall of rain has been registered at Greenwich daily from 
the year 1815 to 1880, and from 1836 to the present time; from 1830 
to the end of 1835 the falls were not registered daily, but only at two 
or three or more days’ interval; and for the daily falls in this period I 
have had recourse to a journal in my possession, taken apparently with 
great care, at High Wycombe, near Reading.’ On the top of p. 114 
he gives a description of the gauge and the corrections he applied. 
What I am going to ask is that you will kindly direct an inquiry to 
be made as to the rainfall of 1831 at the Observatory, as that year 
seems to be the nearest to the present one, and let me know the result. 
I hardly like to ask for the other four years mentioned, as I particu- 
larly do not wish to trouble you more than I can possibly help. 
I am, my dear Sir, 
Yours very truly, 
(Signed) I’, CAMPBELL-BayarD. 
The Astronomer Royal. 
Royal Observatory, Greenwich, London, 8.E., 
December 10th, 1903. 
Dear Mr. BAyarp, 
I am desired by the Astronomer Royal to furnish you with 
particulars relating to the rainfalls recorded at the Observatory in the 
years mentioned in your letter of Dec. 9th. The observations were 
made at very irregular intervals, sometimes after the lapse of three or 
four days (as has already been pointed out in Mr. Glaisher’s paper), 
and cannot be considered to be of equal value to those made after the 
establishment of the regular meteorological service in 1841. This 
being premised, I will proceed to give details of the amounts. The 
amounts for the years 1821 and 1824 are correctly given in Glaisher’s 
paper, viz. 81°58 in. and 32°98 in., but the other values are not derived 
from the Observatory journals. In 1830 and 1831 the results from 
observations of a gauge placed on the ground are 24°62 in. and 26°41 in. 
respectively; and in 1836 the amount recorded at 22 ft. above the 
ground was 24°50 in., which is equivalent to an amount for ground- 
level of 27°84 in., using the proportion established by a comparison of 
the results given by the gauges on the ground and at the height of 
22 ft. made in the years 1841-1850. 
By permission of the Astronomer Royal I am now engaged in dis- 
