Sold by Dulau and Co., 37, Soho Square, W. 
HECENT PAPERS IN THE ‘ PHILOSOPHICAL TRANSACTIONS,’ 
1902-1903. 
Series A.—Mathematical and Physical. 
A. 343. The Electrical Conductmty Imparted to a Vacuum by Hot Conductors. By 0. W. Eichardson 
B.A., B.Sc., Fellow of Trinity College, Cambridge. Price 3s. 6d 
A. 344. On the Formation of Definite Figures by the Deposition of Dust. By John Aitkex, F.E.S. 
Price l.s. 
A. 345. Title, Contents, Index, &c., Vol. 201. Price 6d. 
A. 346. Bakerian Lecture.—On the Constitution of the Copper-Tin Series of Alloys. By C. T. Heycock, 
F.E.S., and F. H. Neville, F.E.S. Price 7.s. 6d. 
A. 347. The Combination of Hydrogen and Chlorine Under the Influence of Light. By P. Y. Bevay, 
M.A., Fellow of Trinity College, Cambridge. Price 2-5. %d. 
A. 348. Meteorological Observations obtained by the Use of Kites oS" the West Coast of Scotland, 1902. 
By W. N. Shaw, Sc.D., F.E.S., and W. H. Dines, B.A. Price Is.. 6d. 
A. 349. The Elasmometer, a New Interferential Form of Elasticity Apparatus. By A. E. H. Tutton, 
D.Sc., F.E.S. Price l.s. 6d. 
A. 350. The !\Iechanical Forces Acting on a Charged Electric Condenser Moving through Space. By 
F. T. Trouton, F.E.S., and H. E. Noble, B.Sc., University College, London. Price Is. 
A. 351. The Spectra of Neon, Krypton and Xenon. By E. C. C. Baly, Lecturer on Spectroscopy in 
University College, London. Price 3s. 
A. 352. On the Discharge of Electricity from Hot Platinum. By Harold A. Wilson, D.Sc., B.A., 
Fellow of Trinity College, Cambridge. Price Is. 6c/. 
A. 353. The Differential Invariants of Space. By A. E. Forsyth, Sc.D., LL.D., F.E.S., Sadleiian 
Professor of Pure Mathematics in the University of Cambridge. Price 3.'?. 
Series P. — Biological. 
B. 213. Title, Contents, Index, &c., Vol. 195. Price 6d. 
B. 214. The Seed-Fungus of Lolium Temulentum, L., the Darnel. By E. M. Freeman, M.S., University 
of IMinnesota. Price 3s. 
B. 215. On the Histology of Ureclo dispersa, Erikss., and the “Mycoplasm” Hypothesis. By 
H. Marshall Ward, Sc.D., F.E.S., Professor of Botany in the University of Cambridge. 
Price 3s. 
B. 216. The CEstrous Cycle and the Formation of the Corpus Luteum in the Sheep. By Francis H. A. 
Marshall, B.A. Price 4s. 
B. 217. On the Evolution of the Proboscidea. By C. W. Andrews, D.Sc., F.O.S., British Museum 
(Natural History). Price Is. 
B. 218. Experiments in Hybridization, with Special Eeference to the Effect of Conditions on Dominance. 
By Leonard Doncaster, B.A., King’s College, Cambridge. Price 3s. 
B. 219. On Eeptilian Eemains from the Trias of Elgin. By O. A. Boulenger, F.E.S. Price 3s. 6'/. 
B. 220. Studies in the Morphology of Spore-producing Members. No. V.—General Comparisons and 
Conclusion. By F. 0. Bower, Sc.D., F.E.S., Eegius Professor of Botany at the University of 
Glasgow. Price 2s. 6(/. 
B. 221. A Method for the Investigation of Fossils by Serial Sections. By W. J. SOLLAS, D.Sc., LL.D., 
F.E.S., Professor of Geology and Palseontology in the University of Oxford. Price Is. 
B. 222. An Account of the Devonian Fish, PaJmspoiuh/Ins Gunni, Traquair. By W. J. SOLLAS, D.Sc., 
LL.D., F.E.S., Professor of Geology and PaLvontology in the University of Oxford, and 
Igerna B. j. Sollas, B.Sc., Lecturer on Zoology in Newnham College, Cambridge. Price 2s. 
Cloth eases for binding the ‘ Philosophical Ti'ansactions ’ can be obtained of Harrison and Sons, 
St. Martin’s Lane. Price Is. 6d. 
