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A 432. The Effect of Hydrogen on the Discharge of Negative Electricity from Hot Platinum. By 
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A 433. Report on the Eruptions of the Soufriere in St. Vincent in 1902, and on a Visit to Montagne 
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of the Volcanoes. By Tempest Anderson, M.D., D.Sc., F.G.S. Pp. 29; 17 Plates. 
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A 434. Petrographical Notes on the Products of the Eruptions of May, 1902, at the Soufriere in 
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A 435. The Constitution of the Electric Spark. By T. Royds, M.Se., 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, 
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A 437. Bakebian 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 Conduc¬ 
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A 438. The Supersaturation and Nuclear Condensation of Certain Organic Vapours. By T. H. Laby, 
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A 439. The Absorption Spectra of the Vapours of Benzene and its Homologues, at Different Tempe¬ 
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B 262. On the Distribution of the Different Arteries supplying the Human Brain. By Charles E. 
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B 263. Longitudinal Symmetry in Phanerogamia. By Percy Groom, M.A., D.Sc., F.L.S_ Pp. 59. 
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B 265. On the Structure of Sigillaria scutdlata, Brongn., and other Eusigillarian Stems, in comparison 
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Trinity College, Cambridge, University Demonstrator in Palseobotany; and Hugh H. 
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B 266. On the Present Distribution and Origin of the Calcareous Concretions in Coal Seams, known as 
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B 267. On Methods for the Continuous (Photographic) and Quasi-continuous Registration of the Diurnal 
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