Reviews — Geology of Glenelg, Lochakh, and S.E. Skye. 135 



Lewisian, and that the schists may be altered representatives of 

 Torridonian strata. The effects produced by the Moine thrust, of 

 Post-Cambrian date, and by other movements are illustrated by 

 sections and many excellent plates. 



The Torridon Sandstone, which is reckoned to be about 14,000 feet 

 thick, occupies prominent belts in South-Eastern Skye and on the 

 Boss-shire coast north of Kyle Akin ; it occurs also in other parts of 

 Skye and over the greater parts of Scalpa and Longay. The highest 

 portion of the series appears in the Crowlin Islands. It is remarked 

 that all the Torridonian rocks are probably in a thrust condition, and 

 that the Cambrian strata have nearly all been formerly covered by 

 Torridonian rocks, carried forward by thrusts. The various Cambrian 

 divisions are described ; Olenellas is recorded from the ' Fucoid 

 Shales ' of Ord Bay, and many fossils from the Durness Limestone, 

 south of Broadford. ' Skye marble,' which was formerly worked in 

 Strath Suardal, is now quarried to the north-west of Broadford, and it 

 is hoped that it '.' may be found suitable for most of the purposes for 

 which Italian marble is now used". 



The Triassic rocks, comprising red and mottled sandstone marl and 

 conglomerate, are well seen near Broadford and Heast, and in Baasay, 

 and they are surmounted by passage-beds no doubt of Bhsetic age, as 

 indicated by fossils obtained by Messrs. Woodward, Wedd, and D. Tait. 

 The Lower and Middle Lias of Broadford, Pabba, and Scalpa were 

 well-known to previous observers, who noted the coral-beds with 

 Isastriea and Thecosmilia and the fossiliferous shales with many 

 Ammonites (Jamesoni and other zones) on Pabba and elsewhere. 

 The headland between Loch Slapin and Loch Eishort affords good 

 sections of the Pabba shales, as described by Mr. Barrow. In the 

 district of Strathaird much new information has been gathered by 

 Mr. Wedd, who has determined the sequence to range from the top of 

 the Middle Lias to the Oxfordian and Corallian — with the absence 

 apparently of the Omatics-heds of the Oxfordian. Apart from some 

 traces of Kellaways Beds the mass of the Oxford Clay belongs to the 

 Cordatus-zone, and the strata, which consist of sandstones and shales, 

 pass upwards into shales with Corallian fossils. This latter horizon 

 was not separated on the map as the evidence at the time was 

 not conclusive. The discovery by Mr. Wedd of Upper Cretaceous 

 (Cenomanian) at Strathaird and Strollamus on Skye and on the south 

 of Scalpa is of great interest. He considers that the Jurassic rocks 

 wei'e subjected to considerable earth-movements prior to the deposition 

 of the Upper Cretaceous. 



The Tertiary igneous rocks of the eastern Cuillins with Blathbheinn 

 (Blaven) and the Bed Hills have been described in a special memoir 

 by Mr. Harker (1904), and a summary only of the leading facts and 

 conclusions is now given. To Mr. Harker also we are indebted for 

 a luminous essay on Ice- Erosion in the Cuillin Hills (noticed in the 

 Geological Magazine for January, 1902, p. 35), so that this most 

 interesting subject is dealt with less fully in the memoir than it 

 otherwise might have been. The final chapters treat of raised 

 beaches, recent deposits, and economics ; and there are palseontological 

 and bibliographical appendices. 



