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EECENT PAPERS IN THE ‘PHILOSOPHICAL TRANSACTIONS,’ 
1907-1908. 
Series A.—Mathematical and Physical. 
A 427. Further Consideration of the Stability of the Pear-shaped Figure of a Rotating Mass of Liquid. 
By Sir G. H. Darwin, K.C.B., F.R.S., Plumian Professor of Astronomy, and Fellow of Trinity 
College, Cambridge. Pp. 19. Price Is. 
A 428. The Thermomagnetic Analysis of Meteoric and Artificial Nickel-iron Alloys. By S. W. J. Smith, 
M.A., A.RC.S., Eoyal College of Science, London. Pp. 89; 2 Plates. Price 5s. 6 d. 
A 429. The Effect of Pressure upon Arc Spectra.—No. 1. Iron. By W. Geoffrey Duffield, B.Sc. 
(Adelaide), B.A. (Cantab.), Honorary Research Fellow in Physics at the Manchester University, 
Mackinnon Student of the Royal Society. Pp. 52; 6 Plates. Price 3s. 6 d. 
A 430. The Diurnal Variation of Terrestrial Magnetism. By Arthur Schuster, F.R.S. Pp. 42. 
Price 2s. 
A 431. Magnetic Declination at Kew Observatory 1890 to 1900. By C. Chree, Sc.D., LL.D., F.R.S., 
Superintendent Observatory Department, National Physical Laboratory. Pp. 42. Price 2s. 
A 432. The Effect of Hydrogen on the Discharge of Negative Electricity from Hot Platinum. By 
Professor H. A. Wilson, F.R.S., King’s College, London. Pp. 27. Price Is. Qd. 
A 433. Report on the Eruptions of the Soufriere in St. Vincent in 1902, and on a Visit to Montagne 
Pel^e in Martinique—Part II. The Changes in the Districts and the Subsequent History 
of the Volcanoes. By Tempest Anderson, M.D., D.Sc., F.G.S. Pp. 29; 17 Plates. 
Price 7s. Qd. 
A 434. Petrographical Notes on the Products of the Eruptions of May, 1902, at the Soufriere in 
St. Vincent. By John S. Flett, M.A., D.Sc. Pp. 28; 2 Plates. Price 2s. 6 d. 
A 435. The Constitution of the Electric Spark. By T. Royds, M.Sc., Beyer Fellow of the Manchester 
University. Pp. 15; 2 Plates. Price Is. 6 d. 
A 436. Thermal Radiation in Absolute Measure at Very Low Temperatures. By J. T. Bottomley, 
M.A., LL.D., D.Sc., F.R.S., and F. A. King. Pp. 31. Price 2s. 
Series B. — Biological. 
B 255. Cases of Colour-blindness, No. VI. to No. XVIII., together with Eleven Selected Examples of 
Normal Colour Sensations. By George J. Burch, M.A., D.Sc. Oxon, F.RS., Lecturer in 
Physics, University College, Reading. Pp. 21. Price Is. 
B 256. The Role of the Various Elements in the Development and Regeneration of Bone. By Sir 
William Macewen, F.R.S. Pp. 27. Price 2s. 
B 257. On the Cranial and Facial Characters of the Neandertal Race. By W. J. Sollas, Sc.D., LL.D., 
F.R.S., Professor of Geology in the University of Oxford. Pp. 59; 1 Plate. Price 5s. 
B 258. The Ascent of Water in Trees. By A. J. Ewart, D.Sc., Ph.D., F.L.S., Government Botanist and 
Professor of Botany in Melbourne University. Pp. 52; 1 Plate. Price 3s. 
B 259. On the Skull, Mandible, and Milk Dentition of Palseomastodon, with some Remarks on the Tooth 
Change in the Proboscidea in General. By C. W. Andrews, D.Sc., F.R.S. (British Museum, 
Natural History). Pp. 15; 2 Plates. Price 2s. 6 d. 
B 260. Miadesmia Membranacea, Bertrand; a New Palaeozoic Lycopod with a Seed-like Structure. By 
Margaret Benson, D.Sc., F.L.S., Royal Holloway College, Englefield Green. Pp. 17; 
5 Plates. Price 2s. 
B 261. Title, Contents, Index, &c., Vol. 199. Pp. 10. Price 6(7 
B 262. On the Distribution of the Different Arteries supplying the Human Brain. By Charles E. 
Beevor, M.D. Lond., F.R.C.P. Pp. 55; 8 Plates. Price 6s. Qd. 
B 263. Longitudinal Symmetry in Phanerogamia. By Percy Groom, M.A., D.Sc., F.L.S. Pp. 59. 
Price 3s. 6 d. 
Cloth cases for binding the 1 Philosophical Transactions ’ can be obtained of Harrison and SONS, 
St. Martin’s Lane. Price Is. Qd. 
