86 
THE GEOLOaiST. 
and metatarsals of Homo is seen a repetition of the same structure in 
Troglodytes. Few but those A\ho have studied the subject with the 
anxiety of the practised observer, can appreciate the pleasure with 
which the morphological student detects in the gorilla skull a struc- 
ture, however trivial, which he has also found in man, even when he 
recognizes such an organ as the styloid process of the temporal in 
man in the angular termination of that " ridge which extends from 
th'e ectopterygoid along the inner border of the foramen ovale in the 
Gorilla," such "styloid" being absent in the Chimpanzees, Orangs, 
and Gibbons, and probably in the fossil Dryopitliectis. In every 
structure that shows on the part of the lower forms of man an ap- 
proach, either in degree or in kind, with a similar structure in the 
higher Quadrumana, the disciple of unity of descent finds a basis for 
his arguments ; whilst he who abides, and may be working out, a 
demonstration of the mode of origin of species, accepting the evidence 
of their origin by law, and the maintainer of the faith in special crea- 
tion, gives due weight to, and watches for the distinctions which limit 
the sub-class Archencephala. 
GEOLOGY OF CASTLETO^s", DEKBYSHIEE. 
By John Taylor, F.G.S. 
Now that the " season" is fast approaching for field-work, a few 
remarks concerning the geology of the above locality will doubtless 
be acceptable to many of our readers. Such of them who may 
have broken ground on it will remember with pleasure its beautiful 
scenery and the peculiar charms which attract the naturalist to it. 
That it is interesting in more respects than a merely geological one, 
is shown by the botanists who wander there in search of rare and 
beautiful plants, and the antiquarian who finds in its old keep and 
other more ancient relics sub- 
^ jects for thought. Above all 
Moultrassie Hall " and " Pe- 
veril Castle" hold an ho- 
noured place in our literature 
enshrined by the genius of 
Scott. The flora of the locality 
is particularly interesting, es- 
pecially that of the lower class. 
Maidenhair, spleenwort, and rue-leaved spleenwort grow upon almost 
every wall; and the cystopteris in several species is also common, whilst 
the adder's-tongue and the little moonwort are exceedingly plentiful 
Eisr. 1. — The "Peak" Cavern. 
