[ V ] 
LIST OF ILLUSTRATIONS. 
Plates 1-2.— Mr. S. W. J. Smith on the Thermomagnetic Analysis of Meteoric and 
Artificial Nickel-Iron Alloys. 
Plates 3-8. —Mr. W. Geoffrey Duffield on the Effect of Pressure upon Arc 
Spectra.—No. 1. Iron. 
Plates 9-25. —Dr. Tempest Anderson on the Eruptions of the Soufriere in St. 
Vincent in 1902, and on a Visit to Montague Pelee in Martinique.—Part II. The 
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Changes in the Districts and the Subsequent History of the Volcanoes. 
Plates 26-27.—Dr. John S. Flett : Petrographical Notes on the Products of the 
Eruptions of May, 1902, at the Soufriere in St. Vincent. 
Plates 28-29. —Mr. T. Royds on the Constitution of the Electric Spark. 
Plates 30-31.—Dr. Charles H. Lees on the Effects of Temperature and Pressure 
on the Thermal Conductivities of Solids.—Part II. The Effects of Low Tempe¬ 
ratures on the Thermal and Electrical Conductivities of Certain Approximately 
Pure Metals and Alloys. 
Plates 32-33. —Dr. Walter Noel Hartley on the Absorption Spectra of the 
Vapours of Benzene and its Homologues, at Different Temperatures and 
Pressures, and of Solutions of Benzene. 
