232 
THE FLORA OF WARWICKSHIRE. 
a single analysis, but I think if more analyses of the rocks in the 
district were made, and the results compared, considerable light 
would be thrown on the mode of their formation and the altera¬ 
tions they have undergone. The most remarkable fact connected 
with the section, however, is found at the top of the hard band. In 
removing the top layer of clay the workmen made a sort of platform, 
which Mr. Harper, the manager, pointed out to me, and kindly had 
left for my inspection. When the clay is removed the surface of the 
rock is found to be beautifully smoothed and polished, which appears 
to me to point very strongly to glacier action. The only other probable 
cause is the slipping of the clay above, but the very slight angle of 
dip seems to preclude this. On the whole the difference in the 
composition of the layers, the contorted strata, and the polishing of 
the rock surface, indicate the action of ice, and I think a more rigid 
investigation of the whole district would tend to confirm this theory. 
I have brought the subject forward thus early, and in a rather 
crude form, in the hope that some of the readers of the “ Midland 
Naturalist” may give the results of their researches, or be induced to 
pay a little attention to the matter. The field is a wide one, and it is 
probable that many more data may be obtained not only on the Red 
Marl, but throughout the district, which will help us to complete the 
history of the G-reat Ice Age, especially as it affects the Midland 
Counties. 
In conclusion, I may mention that in another neighbouring clay 
pit, at the Adderley Park Brick Works, the clay above the marl is very 
tenacious and of good quality, but it contains numerous pockets of sand 
and pebbles. At this pit also is a curious little fracture in the Red 
Marl which has raised the grey bands in a sort of pucker about six 
inches high. 
THE FLORA OF WARWICKSHIRE. 
AN ACCOUNT OF THE FLOWERING PLANTS AND FERNS 
OF THE COUNTY OF WARWICK. 
BY JAMES E. BAGNALL. 
( Continued from page 212.) 
GENTIANAGE^. 
ERYTHR.ff:A. 
E. Centaurium, Pers. Common Centaury. 
Native: On banks, waysides, pastures, and woods. Locally common. 
June to August. 
I. Middleton ; Shustoke ; Maxtoke; Solihull; Knowle ; Marston 
Green; Dukesbridge, etc. 
II. Wellesbourn, Heri. Pern/; Salford! Rev. J. C.; Harbury Heath; 
Alveston pastures ; Marl Cliff; Billesley; Austey Wood, near 
Wootton Wawen ; Lapworth ; Meriden. 
E. pulchella. Fries. Slender Centaury. 
Native : In pastures in calcareous soils. Very rare. July. 
II. Moreton Morrell, H.B.! 
