[ " ] 
VII. Report on the Eruptions of the Soufriere in St. Vincent in 1902, and on a Visit 
to Montague Pelee 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. Communicated by Prof. T. G. Bonney, Sc.D., LL.D., 
F.R.S. . page 275 
VIII. 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. Communicated 
by H. B. Woodward, F.R.S. . 305 
IX. The Constitution of the Electric Spark. By T. Boyds, M.Sc., Beyer Felloiv 
of the Manchester University. Communicated by Prof. A. Schuster, 
F.R.S. . 333 
X. 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 . . . 349 
XI. Bakerian Lecture .—The Effects of Temperature and Pressure on the Thermal 
Conductivities of Solids.—Part II. The Effects of Low Temperatures on the 
Thermal and Electrical Conductivities of Certain Approximately Pure Metals 
and Alloys. By Charles H. Lees, D.Sc., F.R.S., Professor of Physics in 
the East London College, University of London . 381 
XII. The Supersaturation and Nuclear Condensation of Certain Organic Vapours. 
By T. H. Laby, B.A., Emmanuel College, Cambridge, Exhibition of 1851 
Scholar of the University of Sydney, Joule Student of the Royal Society. 
Communicated by Prof. J. J. Thomson, F.R.S. . 445 
XIII. The Absorption Spectra of the Vapours of Benzene and its Homologucs, at 
Different Temperatures and Pressures, and of Solutions of Benzene. By 
Walter Noel Hartley, D.Sc., F.R.S., Royal College of Science, 
Dublin . 475 
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Index to Volume 
529 
