Philosophical Transactions 



1909- 1912. 



SERIES A. CONTAINING PAPERS OF A MATHEMATICAL OR PHYSICAL 

 CHARACTER. 



Vol. 210(1910). Pp.418. Price £1 3s. 6d. 



Vol.211 (1912). P P : 486. With 7 Plates. Price £1 6s. 6d. 



SERIES B. CONTAINING PAPERS OF A BIOLOGICAL CHARACTER. 



Vol. 201 (1910). Pp.392. With 36 Plates. Price £1 15s. 6d. 

 Vol. 202 (1912). P P . 378. With 20 Plates. Price £1 lis. 6d. 



SOLD BY HARRISON & SONS, 45. ST. MARTIN'S LANE, W.C. 



RECENT PAPERS IN THE PHILOSOPHICAL TRANSACTIONS.' 



Sold separately by Dulau & Co., Ltd., 37, Soho Square, London, W. 

 THE KINETIC THEORY OF A GAS CONSTITUTED OF SPHERICALLY 

 SYMMETRICAL MOLECULES. By S. CHAPMAN, M.Sc, Trinity College, 

 Cambridge ; Chief Assistant, Royal Observatory, Greenwich. Pp. 51. Price 2s. 6d. 

 TITLE, CONTENTS, INDEX, &c, Vol. 211. Pp. 10. Price 6d. 

 BAKERIAN LECTURE.— ON THE VARIATION OF THE SPECIFIC HEAT 

 OF WATER, WITH EXPERIMENTS BY A NEW METHOD. By 

 H. L. CALLENDAR, M.A., LL.D., F.R.S., Professor of Physics at the Imperial 

 College of Science and Technology, London, S.W. Pp. 32. Price Is. 6d. 

 A CRITICAL STUDY OF SPECTRAL SERIES. PART II.— THE p AND s 

 SEQUENCES AND THE ATOMIC VOLUME TERM. By W. M. HICKS, 

 Sc.D., F.R.S. Pp.41. Price 2s. 

 SOME PHENOMENA OF SUNSPOTS AND OF TERRESTRIAL MAGNETISM 

 AT KEW OBSERVATORY. By C. CHREE, Sc.D., LL.D., F.R.S., Superintendent 

 of Kew Observatory. Pp. 42. Price 2s. 

 PHYSICO-CHEMICAL DETERMINATIONS AT HIGH PRESSURES BY 

 OPTICAL METHODS. (Research executed in the Davy Faraday Research Laboratory 

 of the Royal Institution of Great Britain. London, W.). By WALTER WAHL, 

 Ph.D., Rosenberg Research Fellow of the University of Helsingfors. Pp. 32. Price 1 s. 6d. 



B. 289. ON THE FOSSIL FLORA OF THE FOREST OF DEAN COALFIELD 

 (GLOUCESTERSHIRE), AND THE RELATIONSHIPS OF THE COAL- 

 FIELDS OF THE WEST OF ENGLAND AND SOUTH WALES. By 

 E. A. NEWELL ARBER, M.A..F.L.S.. F.G.S., Trinity College. Cambridge, University 

 Demonstrator in Paleobotany. Pp. 49 ; 3 Plates. Price 3s. 6d. 



B. 290. ON THE DISCOVERY OF A NOVEL TYPE OF FLINT IMPLEMENTS 

 BELOW THE BASE OF THE RED CRAG OF SUFFOLK, PROVING 

 THE EXISTENCE OF SKILLED WORKERS OF FLINT IN THE 

 PLIOCENE AGE. By Sir RAY LANKESTER, K.C.B., D.Sc, LL.D.. F.R.S. 

 Pp. 54 ; 4 Plates. Price 7s. 



B. 291. ON THE DISTRIBUTION OF THE NERVES OF THE DENTAL PULP. By 

 J. HOWARD MUMMERY, M.R.C.S., L.D.S. Pp. 13 ; 1 Plate. Price 2s. 



B. 292. THE HUMAN ELECTROCARDIOGRAM : A PRELIMINARY INVESTIGA- 

 TION OF YOUNG MALE ADULTS, TO FORM A BASIS FOR 

 PATHOLOGICAL STUDY. By THOMAS LEWIS and M. D. D. GILDER. 

 Pp. 26 ; 2 Plates. Price 2s. 



B. 293. TITLE, CONTENTS, INDEX, &c, Vol. 202. Pp. 10. Price 6d. 



B. 294. A METRICAL ANALYSIS OF CHROMOSOME COMPLEXES, SHOWING 

 CORRELATION OF EVOLUTIONARY DEVELOPMENT AND 

 CHROMATIN THREAD -WIDTH THROUGHOUT THE ANIMAL 

 KINGDOM. By Captain C. F. U. MEEK, M.Sc, F.L.S., F.Z.S. Pp. 74 ; 5 Plates. 

 Price 5s. 



B. 295. PETRIFACTIONS OF THE EARLIEST EUROPEAN ANGIOSPERMS. By 

 MARIE C. STOPES, D.Sc, Ph.D., F.L.S., Fellow of University College, London. 

 Pp. 26 ; 3 Plates. Price 2s. 6d. 



