See i: 
[MAY, 1878.] 
THE 
SCIENTIFIC TRANSACTIONS 
OF THE 
ROYAL DUBLIN SOCIETY. 
VOLUME I. (NEW SERIES). 
MEMOIR No. 3. 
ON THE SATELLITES OF MARS. 
WENTWORTH EROK, LL.D., F.R:A.S., 
[READ BEFORE THE SOCIETY, NOVEMBER 197TH, 1877.) 
Gaublished by the dloyul AublinsSociety. 
OCT A folt 
Of a v 
~2fal Museu’ 
DUBLIN: 
PRINTED BY ALEXANDER THOM, 87 & 88, ABBEY-STREET, 
PRINTER TO THE QUEEN'S MOST EXCELLENT MAJESTY. 
FOR HER MAJESTY’S STATIONERY OFFICE. 
1878. 
