[ J 
CONTENTS. 
(A) 
VOL. 208. 
List of Illustrations.page v - 
Advertisement. vii 
I. Further Consideration of the Stability of the Pear-shaped Figure of'a Rotating 
Mass of Liquid. By Sir G. H. Darwin, K.C.B., F.R.S., Plumian Professor 
of Astronomy, and Fellow of Trinity College, Cambridge .... page 1 
II. The Thermomagnetic Analysis of Meteoric and Artificial Nickel-Iron Alloys. By 
S. W. J. Smith, M.A., A.R.C.S., Royal College of Science, London. Commu¬ 
nicated by Sir Arthur W. Rucker, F.R.S. . 21 
III. Hie Effect of Pressure upon Arc Spectra. — No. 1. Lron. By W. Geoffrey 
Duffield, B.Sc. [Adelaide), B.A. (Cantab.), Honorary Research Fellow in 
Physics at the Manchester University, Maeldnnon Student of the Royal 
Society. Communicated by Prof. A. Schuster, F.R.S . Ill 
IV. The Diurnal Variation of Terrestrial Magnetism. By Arthur Schuster, 
F.R.S. . ....163 
V. Magnetic Declination at Keiv Observatory, 1890 to 1900. By C. Chree, Sc.D., 
LL.D., F.R.S., Superintendent Observatory Department, National Physical 
Laboratory (From the National Physical Laboratory) .205 
VI. The Effect of Hydrogen on the Discharge of Negative Electricity from Hot 
Platinum. By Prof. H. A. Wilson, F.R.S., Kings College, London . 247 
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