70 Notices respecting New Boohs. 



Nisconlith Series (argillites, chiefly), 15000 ft., and the Adams-Lake 

 series (chiefly volcanic rocks), 17100 ft. These are Lower Palaeozoic 

 (chiefly Cambrian) ; and are succeeded by other palaeozoics, the 

 Campbell-Creek Beds, and other argillites, Avith limestones and 

 volcanic rocks, 12500 ft. In the Western District there are Upper 

 Palaeozoic rocks (chiefly Carboniferous, with perhaps Devonian and 

 Permian), consisting of the Cache Formation, of which the hrwer 

 part (argillites, quartzites, volcanic rocks, and some limestone) is 

 6500 ft. thick ; and the upper part has the Marble-Canon limestone, 

 some volcanic rocks, argillites, and quartzites, 3000 ft. Above these 

 is the Nicola Formation ; volcanic, with some limestones and argil- 

 lites (Triassic and to some extent Lower Jurassic), from 7500 ft. to 

 13500 ft. Rocks of early Cretaceous age succeed, the Queen- 

 Charlotte Islands formation (chiefly), consisting of sandstones, 

 conglomerates, and argillites, 7000 ft. Next follow the Tertiaries. 

 Of these the Coldwater group of conglomerates and sandstones 

 (5000 ft.) is Oligocene. The Tranquille beds, volcanic (porphyrites, 

 bedded tuffs, and basalt), 9400 ft., are Miocene. Some conglome- 

 rates referable to lake- and river-gravels, formed from the denu- 

 dation of the Miocene basalts &c, belong probably to the Pliocene 

 period ; and others are possibly masked by the Drift deposits. 



The relationship of the several formations to those known else- 

 where is carefully pointed out. Detailed description of the more 

 interesting rocks is given, including noticeable points in foliation, 

 metamorphism, and other characters, metalliferous conditions, &c. 

 The Plutonic rocks (granitic, sometimes auriferous) are separately 

 noticed at pages 238-248. 



Grlaciation and Surface-deposits, or the Drifts, Boulder-clay, 3000 

 ft. to 5000 ft. thick, Moraines, &c. (Pleistocene), pages 248-302 — 

 and the Grlacial and Post-glacial history of the Eraser and Thompson 

 Valleys (pages 302-310), — subjects of great interest to Grlacialists 

 at home and abroad, are well treated and illustrated. 



The fossils observed in the several series of strata are mentioned 

 as follow : — 



Page 42 (Upper Palaeozoic), Fusulina &c. in the lower part of 

 the Cache-creek formation, and some other fossils at page 80. 

 At pages 50-52 fossils referable to the Trias, and some to the 

 Lower Jurassic, are quoted from the Nicola Series. Some Mol- 

 luscan fossils at p. 64, and some fossil Plants at p. 148, are 

 described as characterizing the Cretaceous series. The fossil 

 Insects and Plants (chiefly the latter) coming from the Tertiary 

 beds are enumerated at pages 75, 165, 231, and 234. 



The minerals of economic worth constitute the next subject of 

 this Report : — Grold, in the rock and in placers, is treated in detail 

 at pages 310-340 as to the localities and conditions under which it 

 is found and likely to be further discovered in the part of British 

 Columbia here dealt with. Other minerals, ores, and useful 

 stones of the region are noticed in detail, pages 340-348. 



Pour valuable Appendices follow: — 1. The Petrology of the 

 rocks of the district. 2. The Shuswap names of places in the dis- 



