2'74 Mr. fF. Campbell-Bayard’s Report of the 
A.—Greenwich Average 80 Yrs. (1816-95). B.—Greenwich Average 40 Yrs. (1856-95). 
Average| 1897 |+ Average Average| 1897 |+ Average 
IN. IN. IN. IN. IN. IN. 
Jan. 1:89 1:73 — 0°16 Jan. 1:98 1:73 — 0°25 
Feb. 1:59 2°24 + 0°65 Feb. 1:43 2°24 + 0:81 
March| 1-52 3°40 + 1-88 March| 1:44 3°40 + 1:96 
April 1-65 1:54 — 0-11 April 1-61 1:54 — 0:07 
May 2-00 1:45 — 0°55 May 1-94 1:45 — 0-49 
June 1-95 1:73 — 0°22 June 2°04 1:73 — 0:31 
July 2°60 0°73 — 1:87 July 2-42 0°73 — 1:69 
Aug. 2-33 2°86 + 0°53 Aug. 2°30 2°86 + 0°56 
Sept. 2°30 2°70 + 0°40 Sept. 2°18 2-70 + 0°52 
Oct. 2°82 0-48 — 2:34 Oct. 2°75 0:48 — 2:27 
Noy. 2°37 1:07 — 1°30 Nov. 2°19 1:07 —1:12 
Dec. 1:94 2:15 + 0°21 Dec. 1:94 2°15 + 0:21 
Year | 24:96 | 2208 | — 288 Year | 24-22 | 2008 | — 244 
C.—Surbiton Average 40 Yrs. (1856-95). D.—Mt. Ararat, Wim., Av. 40Yrs.(1856-95). 
Average| 1897 |+ Average Average| 1897 | +Average 
IN. IN. IN. IN. IN. IN. 
Jan. 2-04 1:96 — 0:08 Jan. 1:79 1-96 +017 
Feb. 1:47 2°01 + 0°54 Feb. 1-38 1:98 + 0:60 
March} 1:44 3°73 + 2:29 March] 1:33 3°32 + 1:99 
April 1:64 1:89 + 0°25 April 1-64 1-61 — 0:03 
May 1-92 1:24 — 0°68 May 1-92 1:08 — 0°84 
June 2-08 3°89 + 1:81 June 2-08 2°92 + 0°84 
July 2°37 1-03 — 1:34 July 2°49 1-02 — 1:47 
Aug. 2°43 2°83 + 0:40 Aug. 2°31 3°23 + 0:92 
Sept. 2°21 2°12 — 0:09 Sept. 2:28 2°72 + 0°44 
Oct. 2°81 0°46 — 2°35 Oct. 2°88 0°55 — 2°33 
Nov. 2°16 0:94 — 1:22 Noy. 2°19 1:29 — 0:90 
Dec. 1:85 2°33 + 0°48 Dec. LEE 2°42 + 0°65 
Year | 24:42 | 24-43 + 0:01 Year | 24:06 24:10 + 0:04 
Tables A and B refer to Greenwich. Table A shows that 
the rainfall of 1897 is 2°88 in. below the 80 years’ average 
(1816-95); whilst table B shows that it is 2-14 in. below the 40 
years’ average (1856-95). The difference between these two 
amounts is 0°74 in., exactly the difference of last year. This 
result is somewhat startling, for it seems to show that the 
average of the 40 years (1816-55) is 0°74 in. higher than the 
average of the 40 years (1856-95), which is not the case. The 
average for the 40 years (1816-55) is 25-71 in., and the difference 
between the mean of this 40 years and of the 40 years (1856-95) 
is 1:49 in., exactly double the difference between the means of 
the 80 and 40 years in tables A and B. These large differences 
would certainly seem to show that we have not yet got a true 
mean for Greenwich. 
