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RECENT PAPERS IN THE ‘ PHILOSOPHICAL TRANSACTIONS,’ 
1911-1912. 
Series A.—Mathematical and Physical. - 
A 479. Memoir on the Theory of the Partitions of Numbers.—Part VI. Partitions in Two-dimensional . 
Space, to which is added an Adumbration of the Theory of the Partitions in Three-dimensional ■ 
Space. By Major P. A. MacMahon, E.A., D.Sc., LL.D., F.E.S. Pp. 29. Price Is. 6d. 
A 480. Eadiation in Explosions of Coal-gas and Air. By W. T. David, B.A., B.Sc., Trinity College, 
Cambridge. Pp. 36. Price 2s. 
A 481. On the Series of Sturm and Liouville, as Derived from a Pair of Fundamental Integral 
Equations instead of a DiflFerential Equation. By A. C. Dixon, F.E.S., Professor of- 
Mathematics, Queen’s University, Belfast. Pp. 22. Price Is. 
A 482. The Kinetic Theory of' a Gas Constituted of Spherically Symmetrical Molecules. By 
S. Chapman, M.Sc., Trinity College, Cambridge; Chief Assistant, Eoyal Observatory,: 
Greenwich. Pp. 51. Price 2s. 6c?. 
A 483. Title, Contents, Index, &c., Vol. 211. Pp. 10. Price 6d. 
A 484. 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.E.S., Professor of Physics at the Imperial 
College of Science and Technologj^, London, S.W. Pp. 32. Price Is. 6d. 
A 485. 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.E.S. Pp. 41. Price 2s. 
A 486. Some Phenomena of Sunspots and of Terrestrial Magnetism at Kew Observatory. By 
C. Chree, Sc.D., LL.D., F.E.S., Superintendent of Kew Observatory. Pp. 42. Price 2s. 
Series B. — Biological. 
B 288. Lapworthuria: A Typical Brittlestar of the Silurian Age; with Suggestions for a New 
Classification of the Ophiuroidea. By Igerna B. J. Sollas, B.Sc., Lecturer on Zoology in 
Newnham College, Cambridge, and W. J. Sollas, F.E.S., Professor of Geology and 
Palaeontology in the University of Oxford. Pp. 20; 2 Plates. Price Is. 6^?. 
B 289. On the Fossil Flora of the Forest of Dean Coalfield (Gloucestershire), and the Eelationships of 
the Coalfields 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 Palaeobotany. Pp. 49; 
3 Plates. Price 3s. 6(?. 
B 290. On the Discovery of a Novel Type of Flint Implements below the Base of the Eed Crag of 
Suffolk, proving the Existence of Skilled Workers of Flint in the Pliocene Age. By Sir Eay 
Lankester, K.C.B., D.Sc., LL.D., F.E.S. Pp. 54; 4 Plates. Price 7s. 
B 291. On the Distribution of the Nerves of the Dental Pulp. By J. HOWARD Mummery, M.E.C.S., 
L.D.S. Pp. 13 ; 1 Plate. Price 2s. 
B 292. The Human Electrocardiogram : A Preliminary Investigation of Yoimg 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 Qd. 
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. Stores, D.Sc., Ph.D., F.L.S., 
Fellow of University College, London. Pp. 26 ; 3 Plates. Price 2s. 6d. 
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