404 
Hartley (W.N.) On the Conditions of Equilibrium 
of Deliquescent and Hygroscopic Salts of Copper, 
Cobalt, and Nickel, with respect to Atmospheric 
Moisture, 318. 
Hartley (W. N.) and Ramace (Huen). Banded 
Flame-Spectra of Metals, 339. 
Hartley (W. N.) and Ramacr (Hueu). A Deter- 
mination of the Wave-lengths of the Principal 
Lines in the Spectrum of Gallium, showing 
their Identity with two Lines in the Solar 
Spectrum, 1. 
Heat, Action of, on the Absorption Spectra and 
Chemical Constitution of Saline Solutions 
(Hartiey), 253. 
Holt (Ernest W. L.) and Beaumont (W. L.). 
Survey of Fishing Grounds, West Coast of 
Ireland, 1890-1891. X.—Report on the Crus- 
tacea Schizopoda of Ireland, 221. 
I. 
ron, Electrical Conductivity and Magnetic Per- | 
meability of various Alloys of (Barrerr, Brown, | 
and HapFrexp), 67. 
J. 
Joly (Joun). An Estimate of the Geological Age 
of the Earth, 23. 
Some Sedimentation Experiments and Theo- 
ries, 391. 
L. 
Line Spectra to Banded Spectra, Note on the 
Relation of (Harriny and Ramage), 839. 
Low Emissive Power of the Radiant Molecules of 
certain Klements (Harriry and Ramage), 339. 
M. 
Magnetic Perturbations of the Spectral Lines 
(Preston), 7. 
‘Index. 
P. 
Periodic Law and Banded Spectra, connexion be- 
tween (Hartiey and Ramaces), 339. 
Preston (Tuomas). Radiating Phenomena in a 
Strong Magnetic Field. Part II].—Maenetic 
Perturbations of the Spectral Lines, 7. 
Ss. 
Saline Solutions, Action of Heat on the Absorp- 
tion Spectra and Chemical Constitution of 
(Hartiey), 253. 
Salts of Copper, Cobalt, and Nickel, Conditions 
of Equilibrium of Deliquescent and Hygro- 
scopic, with respect to Atmospheric Moisture 
(Hartiey), 313. 
Sedimentation Experiments and Theories (Jory), 
891. 
Spectra: Photographs of Ultra- Violet Spark-Spec- 
tra of Iron, Cobalt, Nickel, Ruthenium, Rhodium, 
Palladium, Osmium, Iridium, Platinum, Potas- 
sium Chromate, Potassium Permanganate, and 
Gold (Adeney), 381. 
Spectral Lines, Magnetic Perturbations of the 
(Preston), 7. 
1 
Thermo-EHlectric Phenomena, On some Novel 
(Barrer), 127. 
Trouton (F. T.). The Results of an Electrical 
Experiment, involving the Relative Motion of 
the Earth and Ether, suggested by the late 
Professor FitzGerald, 379. 
Vv. 
Variation: Germinal and Environmental (Ewart), 
358. 
END OF VOLUME VII. 
