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PART. 



8. — The Action of Heat on the Absorption Spectra and Chemical Constitu- 

 tion of Saline Solutions. By W. N. Hartley, f.r.s., Royal College 

 of Science, Dublin. Plates XVII. to XXII, (September, 1900.) 



9. — On the Conditions of Equilibrium of Deliquiescent and Hygroscopic 

 Salts of Copper, Cobalt, and Nickel, with respect to Atmospheric 

 Moisture. By "W". N. Hartley, f.k.s., Honorary Fellow of King's 

 College, London ; Professor of Chemistry, Royal College of Science, 

 Dublin. Plates XXIII., XXIV., and XXV. (July, 1901.) 



10. — A New Collimating- Telescope Gun-Sight for Large and Small Ord- 

 nance. By Sir Howard Grubb, f.r.s., Vice-President, Royal Dublin 

 Society. Plate XXVI. (August, 1901.) 



11. — Photographs of Spark Spectra from the Large Rowland Spectrometer 

 in the Royal University of Ireland. Part I. — The Ultra- Violet 

 Spark Spectra of Iron, Cobalt, Nickel, Ruthenium, Rhodium, 

 Palladium, Osmium, Iridium, Platinum, Potassium, Chromate, 

 Potassium Permanganate, and Gold. By "W. E. Acleney, d.sc., 

 a.r.csci., Curator and Examiner in Chemistry in the Royal Univer- 

 sity of Ireland, Dublin. Plates XXVII. and XXVIII. (September, 

 1901.) 



12. — Banded Elame-Spectra of Metals. By W. N. Hartley, f.r.s., Honorary 

 Eellow of King's College, London ; Royal College of Science, Dublin ; 

 and Hugh Ramage, b.a., a.r.csci., St. John's College, Cambridge. 

 Plates XXIX. to XXXIII. (October, 1901.) 



13. — Variation: Germinal and Environmental. By J. C. Ewart, m.d., f.r.s., 

 Regius Professor of Natural History in the University of Edinburgh. 

 (October, 1901.) 



14. — The Results Of an Electrical Experiment, involving the Relative 

 Motion of the Earth and Ether, suggested by the late Professor 

 EitzGerald. By Fred. T. Trouton, d.sc, f.r.s., University Lecturer 

 in Experimental Physics, Trinity College, Dublin. (April, 1902.) 



15. — Some New Forms of Geodetical Instruments. By Sir Howard Grubb, 

 f.r.s., Vice-President, Royal Dublin Society. Plate XXXIV. 

 (May, 1902.) 



16. — Some Sedimentation Experiments and Theories. By J. Joly, d.sc, 

 f.r.s., f.g.s., Hon. Secretary, Royal Dublin Society. (May, 1902.) 



\_The Title-page, Contents, and Index to Volume VII. will he found at the 

 end of Part I, Vol. VIII.] 



