Sold by Dulau and Co., 37, Soho Square, AV. 
RECENT PAPERS IN THE ‘PHILOSOPHICAL TRANSACTIONS,’ 
1902-1903. 
A. .333. 
A. 334. 
A. 335. 
A. 336. 
A. 337. 
A. 33S. 
A. 339. 
A. 340. 
B. 209. 
B. 210. 
B. 211. 
B. 212. 
B. 213. 
B. 214. 
B. 215. 
B. 216. 
Series A.—Matltematical and Phi/sical. 
An Experimental Determination of tlie Variation with Temperature of the Critical Velocity of 
Flow of Water in ripe.s. By E. G. Coker, M.A. (Cantab.), D.Sc. (Edin.), Assistant Professor 
of Civil Engineering, McGill Univer,sitj^, and S. B. Clement, B.Sc. (McGill), Demonstrator in 
Civil Engineering, IMcGill University, Montreal. Price Is. 
On an Approximate Solution for the Bending of a Beam of Kectangular Cross-Section under 
any System of Load, with Special Beference to Points of Concentrated or Discontinuous 
Loading. By L. N. G. Filon, B.A. (Cantab.), M.A., B.Sc. (Lond.), King’s College, Cambridge, 
Fellow of University College, London, and 1851 Exhibition Science Research Scholar. 
Price 5.S'. 
On the Vibrations and Stability of a Gravitating Planet. By J. H. Jeans, B.A., Isaac Newton 
Student, and Fellow of Trinity College, Cambridge. Price Ls. 6J. 
On the Formation of Definite Figures by the Deposition of Dust. By W. J. Russell, Ph.D., 
F.R.S. Price 2.^■. 6J. 
The Spectrum of y Cygni. By Sir Norman Lockyer, K.C.B., F.R.S,, and F. E. Baxandali., 
-A.R.C.Sc. Price 2s. QiJ. 
Guaternions and Projective Geometry. By Professoi' Ch.vrles Jasper Joi.y, Royal 
A.stronomer of Irelaixl. Piiee 5.'.-. 
The Differential Invariants of a Surface, and their Geometric Significance. By A. R. FOR.SYTH, 
M.A., Sc.D., F.R.S., Sadlei’ian Professor of Pure IMathematics in the University of Cambridge. 
Price 3s. 6(/. 
On the Laws Governing Electiic Discharges in Gases at Low Pressures. By W. R. Carr, B.A., 
Post-graduate Student, University of Toronto. Price 2s‘. 
Series B. — Biological. 
The Pharmacology of Pyraconitine and Methylbenzaconine considered in Relation to their 
Chemical Constitution. By J. Theodore CAsir, M.D., F.R.S., Regius Professor of Materia 
Medica in the University of Aberdeen, ami WvNDH.VM R. DuNST.W, M.A., F.R.S., Director 
of the Scientific and Technical Department of the Imperial Institute. Price Lb’. 
The Structure and Development of the Stem in the Pteridophyta and Gymnosperms. By 
Edavard C. Jei-'erev, Ph.D. (Harvard). Price 3s. 
On the Structure of the Gills of the Lamellibranchia. By W. G. Rideavood, D.Sc., F.L.S., 
Lecturer on Biology at the Medical School of St. Mary’s Hospital, London. Price 9*’. Qd. 
The Development of Echinus Escnlcnins, together with some Points in the De\'elopment of 
E. Miliaris and E. .Icnfns. By E. W. M.4 C'Bride, M.A., D.Sc. (Loud.), sometime Fellow of 
St. John’s College, Cambridge; Strathcona Professor of Zoology in the McGill University, 
Montreal. Price 8.<. 6'/. 
Title, Contents, Index, Ac., Vol. 195. Price &d. 
The Seed-Fungus of LoUnm Teiinileniiiin, L., the Darnel. By E. M. Freeaian, AI.S., University 
of Minnesota. Price 3.''. 
On the Histology of Uredo dispersa, Erikss., and the “Mycoijlasm” Hypothesis. By 
H. .Mai;siiat,t. Ward, Sc.D., F.R.S., Professor of Botany in the University of Camliridge 
Price 3.'-. 
The (Estrous Cycle and the Formation of the Corpus Luteum in the Sheep. By Francis H. A. 
Marshal!., B.A. Price 4.s 
Cloth cases for binding the ‘ Philosophical Transactions ’ can be obtained of Harrison and Sons, 
St. Martin’s Lane, Price U-. 6d. 
