Reviews, — Geological Survey Memoirs. 423 



In conclusion, we may commend the work, not only as a record 

 of knowledge based on extensive personal research, but as one 

 exhibiting great thought and care in the systematic presentation of 

 facts and of philosophic judgment in dealing with the explanation 

 of them. 



II. — Geological StrRVET Memoirs. 



1. The Geology of the Small Isles of Inyerness-shire. By 

 Alfred Harker, F.R.S., with contributions by G. Barrow, F.G.S. 

 pp. ix, 210, with 10 plates and 50 text - illustrations. Price 

 4«. &d. Hand - coloured geological map, Sheet 60 (Scotland) ; 

 price 10s. 3^. 



THE Small Isles include Rum, Eigg, Canna, Sanday, Muck, and 

 Oigh-sgeir, with some smaller islets. The rocks described include 

 the Torridonian of Rum, the Jurassic (Great Oolite Series and 

 Oxfordian) of Eigg and Muck, the newly discovered Upper Cretaceous 

 rocks of Eigg, and the Tertiary igneous rocks, representatives of which, 

 together with glacial and later superficial deposits, are met with in 

 all the islands. Of special interest are the researches on the Tertiary 

 gneisses of Rum, which closely resemble those of the Lewisian 

 formation, and the further observations on the intrusive character 

 of the pitchstone of the Sgurr of Eigg. Considerable additions are 

 made to our knowledge of the Secondary rocks and fossils, notably in 

 the discovery of chalky sandstone with flints, Foraminifera, and 

 fragments of Inoceramus, probably representing a part of the Chalk 

 formation. 



2. The Geology of the Country North axd East of Harrogate. 

 Second edition. By C. Eox-Strangways, F.G.S. pp. v, 100, with 

 8 plates and 6 text-illustrations. Price 2s. 6</. Hand-coloured 

 geological map, Sheet 62 (old series 93 N.W.), England ; price 

 8«. ^d. 



IT is satisfactory to find that a new edition of the memoir on the 

 popular inland watering-place of Harrogate has been required, 

 and that the author of the original edition (dated 1873, but not 

 issued until 1874) has been able to prepare it. The work is 

 illustrated by a useful colour-printed map of the immediate neigh- 

 bourhood of Harrogate, and by interesting pictorial illustrations, from 

 photographs by Mr. Godfrey Bingley, of the Plumpton Rocks, the 

 Knaresborough Dropping Well, etc., and by new sections showing the 

 general structure of the district. The physiography receives more 

 attention. There is a full account of the Harrogate waters, and 

 a practically complete bibliography relating to the geology and 

 mineral waters of the district. 



"We note that the price of the hand-coloured map, which has not 

 undergone revision, has been raised from 3s. to 8s. Zd. In fact, an 

 examination of the Geological Survey List of Memoirs, Maps, etc.for 

 1909 shows that the prices of a large number of maps have been raised 

 • so as in many cases to be prohibitive. Thus the geologist who could 

 purchase the Drift edition of Sheet 6 (Bromley, Maidstone, Tunbridge 

 Wells, etc.) for 8s. ^d. is now expected to pay 26s. ! The same change 



