OF А CAMBRIDGESHIRE WOODLAND, 341 
CLIMATE. 
lainfall.—The mean annual rainfall * for the period of 30 years (1880— 
1909) taken at Waresley Park, about а mile from the wood, is 23°64 ins. 
(6004 em.). This is slightly higher than that of Cambridge *, which for the 
хате period 1з 22:36 ins, (50-84 em.). The difference, however, is too small 
to make any appreciable change in the vegetation, especially as the distri- 
bution of rainfall is practieally the same in the two places. 
On the monthly means for the last 10 years (1900-1909) June is tho 
wettest month with 6°27 em. at Waresley—closely followed by August 
and October with 6°07 and 5°86 em. respectively. This excess in June, 
however, is somewhat compensated for by the fall being more concentrated. 
Thus the average number “rain days,” that is days in which *025 em, or 
more falls, is 11 in June and 17 in October. 
The accompanying table gives the mean monthly rainfalls for the years 
1900-1909 at Cambridge and Waresley, together with the number of 
* rain davs ? :— 
Cambridge. Wareslev. | Cambridge. Waresley. 
~A — — -~ —! -— m — A — 
em. Rain days. сш. Rain days. | em. Rain days. cm. Rain days. 
Тай... 540 15 345 14 | July.. 500 10 2:06 10 
Feb. .. S48 13 0703 14 | Aug... 503 14 6:07 14 
Мат... 3°96 15 444 16 | Sept... 317 10 245 11 
Apr... 3°86 3 401 15 | Oct. .. 576 16 5.86 17 
May .. 4:90 3 520 11 l Nov... £37 11 496 14 
June.. 6:30 12 6'27 11 Пес... 4°70 15 4:95 16 
Temperature.-—The mean annual temperature at Cambridge calculated on 
а 24 years’ average is 503° К. = 10727 C. January is the coldest month with 
an average temperature of 38:6" Е. (3:7? C.), and July the warmest with 
63:1? Е. (1170? C..). 
Complete monthly averages are f :— 
oF, °С. eF, C. 
Jan. у.с... 38:6 в | m 68:7 17:6 
Feb. ........ 41:2 51 Aug. .... . 655 16:72 
Маг......... 42.6 БИШ | Sept. ...... 58:5 14-75 
Арг......... 48:6 9:2 Oct. ...... 51:2 10:6 
May ...... .. 539 12:16 Nov. ...... 42:5 5:94 
Лие...... 60-4 13:4 Dee. ...... 29:8 4:05 
The following figures showing the monthly ranges of temperature are 
taken from Јепупх {, and are calculated for 17 years at Swaffham 
Bulbeck :— 
* British Rainfall. T Bartholomew, 1908, р. 922, 
| Jenyns, 1858, pp. 381 её seg. & p. 19. 
