LIST OF BOOKS OFFERED FOR SALE 



AT THE NKT FlUCKS AFFIXK!) liY 



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

 CAVENDISH SQUARE, LONDON, W. 1. 



AliBEE (E. A. N.). Devonian Floras. A study of the origin of Corniophyta. 



With a preface by D. H.Scott. 8vo. Illustrated. Cloth. Cambridge. lls-Gd. 

 liEILBY (G.). Aggregation and Flow of Solids. Being the recoixls of an 



experimental study of the Micro- Structures and Physical Properties of 



Solids in various states. 1900 1921. pp. xvi + 2-5(3. Svo. With 34 



plates. Cloth. London, 19'21. £1. 

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



Petroleum Geology, pp. 305. 8vo. Illustrated. New York, 1921. £1 4s. 

 DAVIES (A. M.). An Introduction to I'alseontology. Illustrated. Svo. 



Cloth. 1920. 12.S. ed. 

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



New York, 1921. £1 16s. 

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



illustrations. London, 1913. Svo. Cloth. 8s. Gd. 



The Hi ft Valleys and Geology of ICast Africa. With many maps 



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



HAEKEIKA.). Petrology for Students. Fifth edition. Crown Svo. Cloth. 



Cambridge, 1919. 8s. Qd. 

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



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

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



Cloth. London. 1920. 12s.6rf.net. 



Petrographic ^lethods and Calculations, with some Examples 



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



JUKES-BIIOWNE (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. 6fZ. net. 

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



study of Minerals and Crystals, pp. xiv + 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 + 457. Svo. 



Cloth. New York, 1921. £1 10s. 

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



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

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



12 folding maps and ]3 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. HoUoway. pp. xxii + 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. 



PAL^ONTOGRAPHICAL SOCIETY.— Vol. LXXIII. 



CONTAINING 



1.— The Pliocene Mollusca. Vol. II, Part II. By Mr. F. W. Hakmee. 



Four plates. 

 2. — The Ordovician and Sii.ttrian Belleeophontacea. Part II. With 



Title-page and Index. By Dr. F. R. Cowper Reed. Five plates. 

 3. — The Carboniferous Insects. Part I. By Mr. Herbert Bolton. 



Four plates. 



London, 1921. 4to boards or separate parts. £1 5s. net. 



