rdb, v-/n5 



THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Yol. XIV. (I.S.), lo. 5. JULY, 1913. 



THE EFFECT OF A LOW POTENTIAL CUERENT 

 ON PHOTOGEAPHIC PLATES. 



EEY. H. y. GILL, S.J., B.A. 



{A uthors alone are responsible for all opinions expressed in their Communicafions-J 



(PLATES I, II.) 



DUBLIN : 



PUBLISHED BY THE EOYAL DUBLIN SOCI K'l Y, 



LEINSTER HOUSE, DUBLIN. 



WILLIAMS AND NORGATE, 



14, HENRIETTA STREET, COVENT GARDEN, LOiNDoN, W-9r<u^nian hsfjh^ 



1913. /^^' 



mV22 1913 



Fn'ce One Shilling. 



