224 
THE PHYSICAL GEOGRAPHY OF THE PAST. 
What Mr. Salisbury is here referred to, or when he 
pointed out the fern, Mr. Lees does not inform 
us. It was still growing in the same locality, 
and on the western declivity of the Worcester 
Beacon, in 1867 and 1868, as stated by Mr. 
Lees in the “ Botany of Worcestershire ,” p. 75, 
and in the “ Botany of the Malvern Hills ,” 
3rd Edition, 1868, p. 118. It has since been 
eradicated. 
f P. calcareum, 179. In the same vicinity, according to Mr. Salisbury. 
An error. “ The true P. calcareum has not hitherto been found," 
Ed. Lees, “ Botany of Worcestershire," p. 75. 
Lycopodium inundatum, 180. In the large bog on Hartlebury 
Common. Mr. Lees. 
* Equisetum palustre, 180. Hartlebury Common, bog at Wyre, &c. 
E. fluviatile, 180. Boggy glen near Crookbarrow. Also at Alfrick, 
Malvern, &c. 
Equisetum fluviatile of Smith is E. Telmateia, 
Ehrh.; E. maximum, Lam. The latter is the 
plant intended; see “ Botany of Malvern Hills," 
2nd Edit., p. 84. 
Several of tlie plants noted in the “ Strangers’ Guide” and 
in “Loudon’s Magazine” do not reappear in the above 
catalogue. 
Among the former are Lonicera Caprifolium, Hordeum 
sylvaticum, and Ornitliogalum pyrenaicum, which is replaced 
by 0. umbellatum. Among the latter are Cuscuta Epitliy- 
mum and Mentha viridis. It is strange that Mr. Lees should 
have overlooked Perry’s list, although it appeared in “Loudon’s 
Magazine ” in 1881. 
(To be continued.) 
A CHAPTER IN THE PHYSICAL GEOGRAPHY 
OF THE PAST. 
PRESIDENTIAL ADDRESS 
GIVEN TO THE BURTON-ON-TRENT NATURAL HISTORY 
AND ARCHAEOLOGICAL SOCIETY. 
BY HORACE T. BROWN, F.G.S., F.I.C., F.C.S. 
(Continued from page 203.) 
The same graving tools of nature which removed the upper 
measures have also cut deeply into the Limestone itself, 
producing those lovely and picturesque dales which render our 
Derbyshire districts so beautiful. 
