MARVELS OF POND-LIFE 



OB, 



A YEAR'S MICROSCOPIC RECREATIONS 



AMONG- THE 



POLYPS, INFUSORIA, ROTIFERS, WATER-BEARS, 



AND POLYZOA. 



HENRY J. SLACK, F.a.S., 



SECRETARY TO THE ROYAL MICROSCOPICAL SOCIETY ; 



AUTHOR OF 

 'THE PHILOSOPHY OF PROGRESS IN HUMAN AFFAIRS,* ETC. ETC- 



SECOND EDITION. 



ILLUSTEATEB WITH COLOIJEEB PLATES ANI> NTJMEROTJS 

 WOOD ENGRAVINGS. 



L OND ON: 



GROOMBRIDOE AND SONS, 



5, PATERNOSTER ROW. 



MDCCCLXXI. 



