PROCHEDINGS 
OF THE 
NATURAL HISTORY SOCIETY OF DUBLIN, 
FOR THE 
SESSIONS 1865-66, 1866-67, 1867-68, 1868-69 
(INCLUSIVE). 
EDITED FOR THE SOCIETY 
BY 
WILLIAM ARCHER, anp E. PERCEVAL WRIGHT, M.D., 
HONORARY SECRETARIES. 
HOV. 
DUBLIN: 
PRINTED FOR THE SOCIETY, 
BY M. H. GILL. ~ 
1871. 
& 
