Philosophical Transactions 



1905 -1906. 



SERIES A. CONTAINING PAPERS OF A MATHEMATICAL OR PHYSICAL 

 CHARACTER. 



Vol. 205(1906). Pp.528. With 21 Plates. Price £l 8s. Od. 



Vol. 206(1906). Pp. 510. With 19 Plates. Price £l 8s. 6d. 



SERIES B. CONTAINING PAPERS OF A BIOLOGICAL CHARACTER. 



Vol. 197(1905). Pp.408. With 22 Plates. Price £l 13s. 6d. 



Vol. 198(1906). Pp. 508. With 31 Plates. Price £2 Is. Od. 



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



RECENT PAPERS IN THE PHILOSOPHICAL TRANSACTIONS.' 



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



A. 408. GALVANIC CELLS PRODUCED BY THE ACTION OF LIGHT. THE 

 CHEMICAL STATICS AND DYNAMICS OF REVERSIBLE AND 

 IRREVERSIBLE SYSTEMS UNDER THE INFLUENCE OF LIGHT. 

 (SECOND COMMUNICATION.) By MEYER WILDERMAN, Ph.D., B.Sc 

 (Oxon). Pp. 67 ; 8 Plates. Price 3s. 6d. 



A. 409. DETERMINATIONS OF WAVE-LENGTH FROM SPECTRA OBTAINED 

 AT THE TOTAL SOLAR ECLIPSES OF 1900, 1901 AND 1905. By 

 F. W. DYSON, M.A., F.R.S., Astronomer Royal for Scotland, Professor of Astronomy 

 in the University of Edinburgh (Member of the Expeditions from the Royal Observatory, 

 Greenwich). Pp. 50 ; 1 Plate. Price 2s. 6d. 



A. 410, RESEARCHES ON EXPLOSIVES— PART IV. By Sir ANDREW NOBLE, 

 Bart., K.J.B., D.Sc. (Oxon), D.C.L., F.R.S. Pp. 28 ; 10 Plates. Price 5s. 6d. 



A. 411. ON THE OSMOTIC PRESSURES OF SOME CONCENTRATED AQUEOUS 

 SOLUTIONS. By the EARL OF BERKELEY, and E. G. J. HARTLEY, 

 B.A. (Oxon). Pp. 27. Price Is. 6d. 



A. 412. TITLE, CONTENTS, INDEX, &c, Vol. 206. Pp. 10. Price 6d. 



A. 413. THE IONISATION PRODUCED BY HOT PLATINUM IN DIFFERENT 

 GASES. By O. W. RICHARDSON, M.A., D.Sc, Fellow of Trinity College and 

 Clerk Maxwell Student, Cambridge University. Pp. 64. Price 3s. 



A. 414. SECOND MEMOIR ON THE COMPOSITIONS OF NUMBERS. By Major 



P. A. MACMAHON, R.A., D.Sc, F.R.S. Pp. 70. Price 3s. 



B. 245. FURTHER EXPERIMENTS AND HISTOLOGICAL INVESTIGATIONS ON 



INTUMESCENCES, WITH SOME OBSERVATIONS ON NUCLEAR 

 DIVISION IN PATHOLOGICAL TISSUES. By Miss E. DALE. Pp. 43 ; 



4 Plates. Price 4s. 



B. 246. SOME OBSERVATIONS ON WELWITSCHIA MIRABILIS, HOOKER, /, 

 By H. H. W. PEARSON, M.A., F.L.S., Professor of Botany in the South African 

 College, Capetown ; sometime Scholar of Christ's College, Frank Smart Student of Gonville 

 and Caius College, Cambridge, and Assistant in the Royal Gardens, Kew. Pp. 40 ; 



5 Plates. Price 4s. 6d. 



B. 247. THE ARAUCARIE/E, RECENT AND EXTINCT. By A. C. SEWARD, F.R.S., 

 Fellow of Emmanuel College, and SIBILLE O. FORD, formerly Bathurst Student of 

 Newnham College, Cambridge. Pp. 107 ; 2 Plates. Price 5s. 6d. 

 B. 248. ON THE MICROSPORANGIA OF THE PTERIDOSPERME/E, WITH 

 REMARKS ON THEIR RELATIONSHIP TO EXISTING GROUPS. By 

 ROBERT KIDSTON, F.R.S. L. and E., F.G.S. Pp. 33 ; 4 Plates. Price 3s. 

 THE GROWTH OF THE OOCYTE IN ANTEDON : A MORPHOLOGICAL 

 STUDY IN THE CELL-METABOLISM. By GILBERT C. CHUBB, D.Sc, 

 Assistant Professor of Zoology, University College, London. Pp. 59 ; 3 Plates. Price 4s. 

 TITLE, CONTENTS, INDEX, &c, Vol. 198. Pp. 10. Price 6d. 

 THE ACTION OF PITUITARY EXTRACTS UPON THE KIDNEY. By 

 E. A. SCHAFER, F.R.S., and P. T. HERRING. Pp. 29. Price 2s. 



B. 



249. 



B. 



250. 



B. 



251. 



