ep 
TRANSACTIONS (SERIES IlI.). 
Vou. I.—Parts 1-25.—November, 1877, to September, 18838. 
Vou. II.—Parts 1-2.—August, 1879, to April, 1882. 
Vou. III.—Parts 1-14.—September, 1883, to November, 1887. 
Vou. IV.—Parts 1-14.—April, 1888, to November, 1892. 
Vou. V.—Parts 1-18.—May, 1893, to July, 1896. 
Vou. VI.—Parts 1-16.—February, 1896, to August, 1898. 
Vor. VII.—Parts 1-16.—August, 1898, to September, 1902. 
Vou. VIJI.—Parts 1-16.—September, 1902 to March, 1905. 
VOLUME IX. 
| This Volume is concluded with the nine Parts here enumerated. | 
Part 
1. On Secondary Radiation (Part II.), and Atomic Structure. By J. A. McCietianp, M.A., 
Professor of Experimental Physics, University College, Dublin. (May 17,1905.) 1s. 
Il. The Energy of Secondary Radiation. By J. A. McCie_uanp, M.A., Professor of 
Experimental Physics, University College, Dublin. (February 6, 1906.) 1s. 
111. Secondary Radiation from Compounds. By J. A. McCie1ianp, M.A., Professor of 
Experimental Physics, University College, Dublin, and F,. E. Hacxrrt, M.A., B.Sc. 
(April 12, 1906.) Is. 
IV. Lhe Absorption of Radium Rays by Matter. By J. A. McCieniann, M.A., D.Sc. 
Professor of Experimental Physics, University College, Dublin; and F. E. Hacxery, 
M.A., B.Sc. (March 21, 1907.) 1s. 
V. Electro-Magnetic Mass. By Arruur W. Conway, M.A., F.R.U.L., Professor of 
Mathematical Physies, University College, Dublin. (March 28, 1907.) Is. ~ 
VI. The Densities and Specific Heats of some Alloys of Iron. By W. Brown, B.Sc. 
(August 23, 1907.) Is. 
VII. An Investigation of the Connexion between Band and Line Spectra of the same Metallic 
Hlements. [Plates I. and I1.] By Walter Noel Hartley, D.Sc., F.L.S., Royal College 
of Science, Dublin. (October 1, 1908.) 2s. 
VIII. Lhe Eruption of Vesuvius in April, 1906. [Plates III-X XIII., including two Maps.] 
By H. J. Jounsron-Lavis, M.D, D.Cu., F.G.8., ete, late Professor of Vuleanology in 
the Royal University of Naples. (January 11, 1909.) 6s. 
IX. The Secondary Radiation excited by y Rays. By F. EH. Hackurr, M.A., Pu.D., 
University College, Dublin. (January 12, 1909.) Is. 
RR, (7) 
i Ss; 4. re 
