MARVELS OF POND-LIFE 



A YEAR'S MICROSCOPIC RECREATIONS 



AMONG- THE 



POLYPS, INFUSORIA, ROTIFERS, WATER-BEARS, 

 AND POLYZOA. 



BY 



HENRY J. SLACK, F.G.S., 



SECRETARY TO THE ROYAL MICROSCOPICAL SOCIETY ; 



AUTHOR OP 

 'THE PHILOSOPHY OF PROGRESS IN HUMAN AFFAIRS,' ETC. ET^ 



SECOND EDITION. 



1LL¥STEATED WITH COLOURED PLATES AND N¥MEEOTJS 

 WOOD ENGEAVINGS. 



LONDON: 



GROOMBRIDGE AND SONS, 



5, PATERNOSTER ROW. 



MDCCCLXXI. 



