PUBLISHED BY THE ROYAL SOCIETY, 



BURLINGTON HOUSE, LONDON. 



Sold by Henry Frowde, Amen Corner. 

 Impl. 4to. Price 3 guineas. 

 THE SIGNATURES IN THE FIRST JOURNAL-BOOK AND THE CHARTER- 

 BOOK OF THE ROYAL SOCIETY, being a Facsimile of the Signatures of the Founders, Patrons, and Fellows 

 of the Society from the Year 1660 down to the Present Time. A reduction of price to Fellows of the Society. 



Crown|4to. 483 pages. Price 15^. 

 THE RECORD OF THE ROYAL SOCIETY OF LONDON. Third Edition, entirely 



revised and rearranged. A reduction of price to Fellows of the Society. 



Crown 4to. 455 pages. Price i$s. 

 CATALOGUE OF THE PERIODICAL PUBLICATIONS IN THE LIBRARY OF 



THE ROYAL SOCIETY, 1912. A reduction of price to Fellows of the Society. 



Crown 4to. 128 pages. Price 5^. 

 THE CELEBRATION OF THE 250th ANNIVERSARY OF THE ROYAL SOCIETY 



OF LONDON, JULY 15-19, 1912. A reduction of price to Fellows of the Society. 



Sold by Harrison & Sons, 45, St. Martin's Lane, W.C. 

 A GENERAL INDEX (under Authors' Names) to the ' Proceedings of the Royal Society.' 



Vols. 1—75. Covering the Period 1800—1905. Price 5s. Half price to Fellows of the Society. 



REPORT ON THE PEARL OYSTER FISHERIES OF THE GULF OF MANAAR. 



By W. A. Herdman, f.r.s. With Supplementary Reports by other Naturalists upon the Marine Biology. 

 4to, cloth boards. 5 Parts, 1903—1906. Price per Part, 2ttr. ; to Fellows, 15s. 



REPORTS OF THE SLEEPING SICKNESS COMMISSION OF THE ROYAL 



SOCIETY. Demyovo. No. I., 1903, Price 7.?. Sd. No. II., 1903, Price 7*. 6d. No. III., 1903, Price 6s. No. IV., 

 1903, Price 6*. 6d. No. V. , 1905, Price 3*. No. VI., 1905, Price 4j. 6d. No. VII., 1906, Price 4*. 6d. No. VIII., 

 1907, Price 2s. 6d. No. IX., 1908, Price Is. 6d. No. X., 1910, Price is. No. XL, 1911, Is. No. XII., 1912, 5s. 6d. 

 No. XIII., 1913, 2s. 6d. No. XIV.,,1913, 2*. 6d* 



* Nos. VI. — XIV., Published by Wyman and Sons, Ltd., Fetter Xane, E.C. 



REPORTS OF THE COMMISSION ON MEDITERRANEAN FEVER. 8vo. 



Part I., 1905, Price is. Part II., 1905, Price 2s. Part III., 1905, Price 2s. 6d. Part IV., 1906, Price 3s. 6d. 

 Part V., 1907, Price 2s. 6d. Part VI., 1907, Price 3s. Part VII., 1907, Price 5s. 



REPORTS TO THE EVOLUTION COMMITTEE OF THE ROYAL SOCIETY. 



Demy 3vo. 



Report 1. By W. Bateson, m.a., f.r.s., and Miss Saunders. Pp. 160. 1902. Price 10*. 



Report 2. By W. Bateson, m.a., f.r.s., Miss Saunders, R. C. Punnett, m.a., 



and C. C. Hurst, f.l.s. Pp. 154. 1905. Price Is. 6d. 



Report 3. By W. Bateson, m.a., f.r.s., Miss E. R. Saunders, and 



R. C. Punnett, m.a. Pp. 53. 1906. Price 2s. 6d. 



Report 4. By the same, with Miss Durham, L. Doncaster, etc. Pp. 60. 1908. Price 2s. 6<£ 



Report 5 (concluding). By M. Wheldale, D. C. E. Marryat, and I. B. J. Sollas. 



Pp. 79. 1909. Price 3s. 6d. 



Title page, Contents, and Index to above 5 Reports. Price 6d. 



The 5 Reports may also be obtained bound complete in one volume, Price 20s. 



CATALOGUE OF SCIENTIFIC PAPERS, 1884— 1900. 



Now Ready. Vol. XIII. A to Bzowski. Cloth, 50^ net. Half morocco, 6cu. net. 

 Cambridge University Press, Fetter Lane, E.C. 



Contents of PROCEEDINGS, No. A 621. August, ioi4. 



Price 4s. Page 



MORPHOLOGICAL STUDIES OF BENZENE DERIVATIVES.— VII. THE 



CORRELATION OF THE FORMS OF CRYSTALS WITH THEIR MOLECULAR STRUCTURE 

 \ND ORIENTATION IN A MAGNETIC FIELD IN THE CASE OF HYDRATED SULPHON- 

 ATES Of DYAD METALS. By Henry E. Armstrong, F.R.S., and E. H. Rodd, D.Sc 463 



DIMETH^LENEDIOL PEROXIDE (DIFORMAL PEROXIDE HYDRATE). 



By H. J. H. Fenton, M.A., Sc.D., F.R.S 192 



ABSORPTION OF GASES IN THE DISCHARGE TUBE. By F. H. Newman, 



A.R.C.S., B.Sc 499 



PHOTOGRAPHIC ANALYSIS OF EXPLOSIONS IN THE MAGNETIC 



FIELD. By Prof. Harold B. Dixon, F.R.S., C. Campbell, M.Sc, and W. E. Sclater, B.Sc. (Plates 5-8) 506 



ON THE SPECTRUM OF ELEMENTARY SILICON. By Sir William Crookes, 



O.M., P.R.S 512 



THE EXCITATION OF y-RAYS BY 0-RAYS. By H. Richardson, M.Sc 521 



ELECTRIFICATION OF WATER BY SPLASHING AND SPRAYING. By 



J. J. Nolan, M.A., M.Sc 531 



THE OSMOTIC DATA IN RELATION TO PROGRESSIVE HYDRATION. 



By W. R Bousfield, M.A., K.C ..544 



ON THE ORIGIN OF THE ELECTRON EMISSION FROM GLOWING 



SOLIDS. By Frank Horton, Sc.D. (Abstract) 548 



ATTEMPTS TO PRODUCE THE RARE GASES BY ELECTRIC DISCHARGE. 



By Tho jas R. Merton, B.Sc. (Oxon.) 549 



NOTE ON THE PAPER BY T. R. MERTON ON " ATTEMPTS TO PRODUCE 



THE PARE GASES BY ELECTRIC DISCHARGE." By T. Norman Collie, F.R.S 554 



THE CAPACITY FOR HEAT OF METALS AT LOW TEMPERATURES. 



By E. H. Griffiths, Sc.D., F.R.S, and Ezer Griffiths, M.Sc. (Abstract) 557 



DILUTE SOLUTIONS OF ALUMINIUM IN GOLD. By C. T. Heycock, F.R.S., 



and F. H. Neville, F.R.S. (Abstract) -.. ..560 



