[May 17, 1905. | 
THE 
SCIENTIFIC TRANSACTIONS 
OF THK 
IROICAIE IDIWIBIGIDN srOxO Ia dt wv. 
VOLUME I[X.—(SERIES IT.) 
I, 
ON SECONDARY RADIATION (PART II.), AND ATOMIC STRUCTURE. 
BY 
J. A. McCLELLAND, M.A., 
Professor of Experimental Physics, University College, Dublin. 
DUBLIN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 
WILLIAMS AND NORGATE, 
14, HENRIETTA STREET, COVENT GARDEN, LONDON ; 
20, SOUTH FREDERICK STREET, EDINBURGH: anp 7, BROAD STREET, OXFORD. 
PRINTED AT THE UNIVERSITY PRESS, BY PONSONBY AND GIBBS. 
1905. 
