86 



THE GEOLOGIST. 



and metatarsals of Romo is seen a repetition of the same structure in 

 Troglodytes. Few but those who 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 

 the 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 Bryopitliecus. 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 maintaiuer of the faith in special crea- 

 tion, gives due weight to, and watches for the distinctions which limit 

 the sub-class Archencephala. 



GEOLOGY OF CASTLETON, DEEBYSHIEE. 



By John Taxlor, E.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 tlie naturalist to it. 

 That it is interesting in more respects than a merely geological one, 

 is shown by the botanists w^ho 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- 

 verii 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. 



J\laulenhau', splccuwort, and rue-leaved spleenwort grow upon almost 

 in ory wall ; and the cystopteris in several species is also common, whilst 

 ailder's-tongue and the little moonwort are exceedinglv plentiful 



