LIST OF BOOKS OFFERED FOR SALE 



AT THK NET PRICKS AFFIXED BY 



DULAU & CO., LTD., 34-36 MARGARET STREET, 

 CAVENDISH SQUARE, LONDON, W. 1. 



ARBEK (E. A. N.). Devonian Floras. A study of the origin of Cormophyta. 



Witbapreface by D.H.Scott. Svo. Illustrated. Cloth. Cambridge. 17s. 6c?. 

 BEILBY (G.). Aggregation and Flow of Solids. Being the records of an 



experimental study of the Micro- Structures and Physical Properties of 



Solids in various states. 1900-1921. pp. xvi + 256. 8vo. With 34 



plates. Cloth. London, 1921. £1. 

 BRYDONE (R. M.). The Stratigraphy of the Chalk of Hants, with Map and 



Palseontological Notes, pp. 116. Royal Svo. With 3 plates and large 



coloured zonal map. 10s. 6d. net. 

 COX (G. H.), DAKE (C. L.), and MUILENBURG (G. A.). Field Methods in 



Petroleum Geology, pp.305. Svo. Illustrated. New York, 1921. £1 4s. 

 DAVIE S (A. M.). An Introduction to Palaeontology. Illustrated. Svo. 



Cloth. 1920. 12s. 6d. 

 EMMONS (W. H.). Geology of Petroleum, pp. 624. Svo. Illustrated. 



New York, 1921. £1 16s. 

 GREGORY (J. W.). Nature and Origin of Fiords. With diagrams and 



illustrations. London, 1913. Svo. Cloth. 8s. 6d. 



The Rift Valleys and Geology of East Africa. With many maps 



and illustrations, pp. 479. Svo. Clotli. London, 1921. £1 12s. 



HARKER(A.). Petrology for Students. Fifth edition. Crown Svo. Cloth. 



Cambridge, 1919. Ss. 6d. 

 HAWKINS (H. L.). Invertebrate Palaeontology, and Introduction to the Study 



of Fossils. Svo. With 16 illustrations. Cloth. London, 1920. 6s. 6rf. 

 HOBBS (W. H.). Earth Evolutions and its Facial Expression. Svo. 



Illustrated. Cloth. New York, 1921. 15s. 

 HOLMES (A.). Nomenclature of Petrology, pp. 284 + viii. Crown Svo. 



Cloth. London, 1920. 12s. 6d. net. 



Petrographic Methods and Calculations, with some Examples 



of Results Achieved, pp.xx + 516. Svo. Cloth. London, 1921. £1 lis. 6(Z. 



JUKES-BROWNE (A. J,). The Hills and Valleys of Torquay: a Study in 



Valley Development and an explanation of Local Scenery. 1907. 



Seven maps and diagrams. Svo. Cloth. 2s. Qd. net. 

 KRAUS (E. H.) AND HUNT (W. F.). Mineralogy: an introduction to the 



study of Minerals and Crystals, pp. xiv -f 561. Svo. Cloth. New 



York, 1920. £1 7s. 

 LAKE (P.) AND RASTALL (R. H.). Text-book of Geology. Third edition. 



London, 1920. Svo. Cloth. £1 Is. 

 LEITH (C. K.). The Economic Aspect of Geology, pp. xiii -f 457. Svo. 



Cloth. New York, 1921. £1 lOs. 



and MEAD (W. J.). Metamorphic Geology. A Textbook. Svo. 



Illustrated. Cloth. New York, 1915. £1. 



POSTLETHWAlTE (J.). Mines and Mining in the (English) Lake District. 



Third edition. 8vo. Illustrated. Cloth. Whitehaven, 1913. 5s. 

 RASTALL (R. H.). Agricultural Geology, pp. 340. Svo. Illustrated. 



Cloth. Cambridge, 1916. 12s. 

 REED (F. R. C). The Geology of the British Empire, pp. 480. Svo. W^ith 



12 folding maps and 18 maps and sections in the text. Cloth. London, 



1921. £2. 

 RUTLEY (F.). Elements of Mineralogy. 20th ed. Revised with an intro- 

 duction by G. T. Holloway. pp. xxii-f 394. Cr. Svo. Illustrated. Cloth. 6s. 

 TEALL (J. J. Harris), M.A., F.G.S. British Petrography: with special 



reference to the Igneous Rocks. With 47 plates. Royal Svo. Cloth. 



£3 3s. net. 



