INTRODUCTION. xiii 
similar Tertiary deposits, yields Radiola linoides, Scutellaria 
minor, Centunculus, Potamogeton polygonifolius, Nardus stricta, 
Anthoxanthum Puellit, Erica tetralix, Ulex nanus, Carex Pseudo 
Cyperus, Bidens cernua, Veronica scutellata, Anthemis nobilis, 
Aira flexuosa, caryophyllea, preecox, Dianthus Armeria, Carex 
flava minor, Hornschuchiana, echinata, Viola lactea, Ranunculus 
hederaceus, R. penicillatus. 
By the river occur Leucojum estivum, Ornithogalum um- 
bellatum, Callitriche obtusangula, Bidens cernua, Einanthe fluvia- 
tilis, Hydrocharis, Pedicularis palustris, Chara Hedwigti, Lysi- 
machia vulgaris, Stellaria palustris, Salic purpurea, Cera- 
tophyllon, Cuscuta europea, Smyrnium, Einanthe crocata. 
METEOROLOGY. 
Rainfall. From 34 years’ observations, made at the Oxford 
Observatory from 1851-1884 inclusive, the mean yearly rainfall 
is shown to be 26-42 inches. The driest year being 1874, with 
17°864 inches; the wettest 1852, with 40-416 in. The maximum 
monthly fall was Oct. 1875 with 7-531 inch: the mimimum 
Sept. 1865, 0176. 
Monthly Mean of 34 yrs.0bs. Max. Monthly Fall. Min. Monthly Fall. 
January oo... 2-33 inch 5-451 1852 0-272 1855. 
February ......... I-64 4, 3744 1883 0-279 1862. 
Mareh 2... ,cc00000 I-62 ,, 5-462 1862 0-413 1854. 
APTI xcassnaessie Ie72 yy 3920 1882 0-410 1855. 
May‘. cticcosstvguats 1-99 5, 4971 1878 0-430 1871. 
JUNE S a scrvcniearies 2-59 ,, 7-087 1852 0-658 1870. 
July ........ " 2-63 5, 6-098 1880 0-470 1864. 
August... 244 55 5-120 1878 0-494 1880. 
September ...... 2:59 o> 5-838 1876 0-176 1865. 
October.........4+. 281 ,, 7-531 1875 0-733 1879. 
November ...... 2-16 ,, 7-142 1852 0-460 1855. 
December ......... 1-90 ,, 5-103 1876 o-418 1876. 
The mean yearly amount of cloud for 32 years’ observations 
ig 7°I. 
Temperature. 
The mean yearly reading of the Barometer for the last 
30 years is 29-720; varying from 29-785 in 1858 to 29-572 in 
1872. 
