[Ocrozrr, 1896. ] 
THE 
SCIENTIFIC TRANSACTIONS 
OF THE 
Pome OUBEEN SOCTHT Y. 
VOLUME VI.—(SERIES II.) 
V. 
ON A METHOD OF PHOTOGRAPHY IN NATURAL COLOURS. 
By J. JOLY, M.A., 8c.D., F.R.S. 
(Puares V. anv VI.) 
DUBLIN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 
WILLIAMS AND NORGATHE, 
14, HENRIETTA STREET, COVENT GARDEN, LONDON; 
20, SOUTH FREDERICK STREET, EDINBURGH; anv 7, BROAD STREET, OXFORD. 
PRINTED AT THE UNIVERSITY PRESS, BY PONSONBY AND WELDRICK. 
1896. 
Price One Shilling. 
