az | DecumBar, 1882. ] 
THE 
SCIENTIFIC TRANSACTIONS 
OF THE 
ROYAL DUBLIN SOCIETY. 
VOLUME I. (SERIES IL) 
XX.—WNotes on the Physical Appearance of the Planet Mars during the Opposition 
im 1881. Accompanied by Sketches made at the Observatory, Birr Castle. By 
Orro Bappickrer, Pu.D.—Wirn Pirates XXXVI. anv XX XVII. 
DUBLIN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 
PRINTED BY ALEX. THOM & CO, 87, 88, & 89, ABBEY-STREET, 
THE QUEEN'S PRINTING OFFICE. 
FOR HER MAJESTY’S STATIONERY OFFICE. 
1882. 
Price One Shilling. 
Lief ae 
