TRANSACTIONS (SERIES II.). 
Vou. I.—Parts 1-25.—November. 1877, to September, 18838. 
Vor. Ii.—Parts 1-2.—August. 1879, to April, 1882. 
Vor. III.—Parts 1-14.—September. 1883. to November, 1887. 
Vout. IV.—Parts 1-14.—April, 1888, to November. 1892. 
Vor. Y.—Parts 1-18.—May, 1893, to July, 1896. 
Vor. 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. 
Parr 
1. On Secondary Radiation (Part JI.), and Atomic Structure. By J. A. McCuenianp, M.A., 
Professor of Experimental Physics, University College, Dublin, (May 17,1905.) 1s. 
II. The Energy of Secondary Radiation. By J. A. McCrennanpn, M.A., Professor of 
Experimental Physics, University College, Dublin. (February 6, 1906.) Is. 
III. Secondary Radiation from Compounds. By J. A. McCrennanp, M.A., Professor of 
Experimental Physics, University College, Dublin, and F. E. Hacker, M.A., B.Sc. 
(April 12, 1906.) 1s. 
IV. The Absorption of Radium Rays by Matter. By J. A. McCrutianp, M.A., D.Sc, 
Professor of ixperimental 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.I., Professor of — 
Mathematical Physies, University College, Dublin. (March 28, 1907.) Is. 
