[Fesruary 6, 1906. | 
THE 
SCIENTIFIC TRANSACTIONS 
OF THE 
MmOVe wi DIIIN SOC lH PY: 
VOLUME IX.—(SERIES IL) 
If. 
THE ENERGY OF SECONDARY RADIATION. 
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: anv 7, BROAD STREET, OXFORD. 
PRINTED AT THE UNIVERSITY PRESS, BY PONSONBY AND GIBBS. 
1906. 
