Philosophical Transactions 



1908- 1909. 



SERIES A. CONTAINING PAPERS OF A MATHEMATICAL OR PHYSICAL 

 CHARACTER. 



Vol. 208 (1908). Pp.530. With 33 Plaies. Price £ I 18s. 6H. 

 Vol. 209 (1909). Pp.480. With 13 Plates. Price £1 13s. Od. 



SERIES B. CONTAINING PAPERS OF A BIOLOGICAL CHARACTER. 



Vol. 199(1908). Pp.428. With 37 Plates. Price £1 16s. Od. 

 Vol. 200 (1909). Pp. 524. With 37 Plates. Price £2 5s. 6d. 



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



RECENT PAPERS IN THE PHILOSOPHICAL TRANSACTIONS." 



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



A. 454. ON THE SPONTANEOUS CRYSTALLIS.ATION OF MONOCHLORACETIC 

 ACID AND ITS MIXTURES WITH NAPHTHALENE. By Principal 

 HENRY A MIERS, F.R.S., and Miss FLORENCE ISAAC, Research Fellow of 

 Somerville College, Oxford. Pp.41. Price 2s. 6d. 



A. 455. ON THE ELECTRICITY OF RAIN AND ITS ORIGIN IN THUNDER- 

 STORMS. By GEORGE C. SIMPSON, D.Sc. Pp. 35. Price 2s. 



A. 456. FUNCTIONS OF POSITIVE AND NEGATIVE TYPE, AND THEIR CON- 

 NECTION WITH THE THEORY OF INTEGRAL EQUATIONS. By 

 J. MERCER, B.A., Trinity College, Cambridge. Pp. 32. Price 2s. 



A. 457. THE SPECTRUM OF MAGNESIUM HYDRIDE. By A. FOWLER, A.R.C.S., 

 F.R.A.S., Assistant Professor of Physics, Imperial College of Science and Technology, 

 South Kensington. Pp. 32 ; 2 Plates. Price 2s. 6d. 



A. 458. TITLE. CONTENTS, INDEX, &c., Vol. 209. Pp. 10. Price 6d. 



A. 459. A WAVE-LENGTH COMPARATOR FOR STANDARDS OF LENGTH : AN 

 INSTRUMENT FOR FINE MEASUREMENT IN WAVE-LENGTHS OF 

 LIGHT. WITH AN APPENDIX ON THE USE OF WAVE-LENGTH 

 RULINGS AS DEFINING LINES ON STANDARDS OF LENGTH. By 

 A. E. H. TUTTON, M.A., D.Sc, F.R.S. Pp. 34. Price 2s. 



A. 460. THE ELASTIC LIMITS OF IRON AND STEEL UNDER CYCLICAL 



VARIATIONS OF STRESS. By LEONARD BAIRSTOW, A.R.C.Sc, Wh.Sch. 

 Pp.21. Price Is. 6d. 



B. 267. ON METHODS FOR THE CONTINUOUS (PHOTOGRAPHIC) AND 



QUASI-CONTINUOUS REGISTRATION OF THE DIURNAL CURVE OF 

 THE TEMPERATURE OF THE ANIMAL BODY. By ARTHUR 

 GAMGEE, M.D., F R.C.P., F.R.S., Hon. LL.D. Ed.n., Hon. D.Sc. Manch., Emeritus 

 Professor of Physiology in the University of Manchester. Pp. 22 ; 2 Plates. Price 2s. 



B. 268. THE ACTION OF THE VENOM OF SEPEDON H/EMACHATES OF SOUTH 

 AFRICA. By Sir THOMAS R. ERASER, M.D., LL.D., Sc.D., F.R.S., Professor 

 of Materia Medica, University of Edinburgh ; and JAMES A. GUNN, M.A., B.Sc, M.D., 

 Assistant in the Materia Medica Department, University of Edinburgh. Pp. 29. Price 1 s. 6d. 



B. 269. THE PROPORTION OF THE SEXES PRODUCED BY WHITES AND 

 COLOURED PEOPLES IN CUBA. By WALTER HEAPE, M.A., F.R.S. , 

 Trinity College, Cambridge. Pp. 60. Price 3s. 



B. 270. FURTHER OBSERVATIONS ON WELWITSCHIA. By H. H. W. PEARSON, 

 Sc.D., F.L.S. Pp. 72 ; 9 Plates. Price 6s. 



B. 271. THE INTRACRANIAL VASCULAR SYSTEM OF SPHENODON. By 

 ARTHUR DENDY, D.Sc, F.R.S., Sec. L.S., F.Z.S., Professor of Zoology in King's 

 College (University of London). Pp. 24 ; I Plate. Price 2s. 



B. 272. THE GIANT NERVE CELLS AND FIBRES OF HALLA PARTHENOPEIA. 



By J. H. ASHWORTH, D.Sc, Lecturer in Invertebrate Zoology in the University of 

 Edinburgh. Pp. 95 ; 6 Plates. Price 12s. 6d. 



B. 275. TITLE, CONTENTS, INDEX, &c.. Vol. 200. Pp. 10. Price 6d. 



