lv Contents. 
HARTLEY, W. N., F.R.S. PAGE 
The Action of Heat on the Absorption Spectra and Chemical Constitution of Saline 
Solutions (Plates XVII. to XXII.), . : ; : : : : . . 258 
[Published September, 1900.] 
On the Conditions of Equilibrium of Deliquescent and Hygroscopic Salts of Copper, 
Cobalt, and Nickel, with respect to Atmospheric Moisture (Plates XXIII. toXXV.), 3138 
[Published July, 1901.] 
HARTLEY, W. N., F.R.S., ano HUGH RAMAGEH, A.R.C.Sc.1. 
A Determination of the Wave-lengths of the Principal Lines in the Spectrum of Gallium, 
showing their Identity with Two Lines in the Solar Spectrum (Plate I.), : : 1 
[Published August, 1898.] 
Banded Flame-Spectra of Metals (Plates XXIX. to XXXIII.), : : 0 . 389 
[Published October, 1901. | 
HOLT, ERNEST W. L., anv W. I. BEAUMONT, B.A. 
Survey of Fishing Grounds, West Coast of Ireland, 1890-1891. X.—Report on the 
Crustacea Schizopoda of Ireland (Plate XVI.), .. : : : ; : «pA 
[Published April, 1900.) 
JOLY, J.. M.A., D.Sc., F.R.S., F.G.S. 
An Estimate of the Geological Age of the Earth, : : ‘ : ; : 5 CS} 
[Published November, 1899.} 
Some Sedimentation Experiments and Theories, ; A , é : , > aol 
[Published May, 1902.] 
PRESTON, THOMAS, M.A., D.So., F.R.S. 
Radiating Phenomena in a Strong Magnetic Field. Part IIl.—Magnetic Perturbations 
of the Spectral Lines, : : : : ; 5 : 4 ‘ : : 7 
[ Published June, 1899.] 
RAMAGE, HUGH. (See Harriry and Ramacez.) 
TROUTON, F. T., D.So., F.R.S. 
The Results of an Electrical Experiment, involving the Relative Motion of the Harth 
and Ether, suggested by the late Professor Fitz Gerald, : : : : 56 wry) 
[Published April, 1902.] 
InpEX To VOLUME, . : : ; : : : P ‘ , : : ; : . 4038 
