HANDBOOK 



or 



INVERTEBRATE ZOOLOGY, 



FOR LABORATORIES AND SEASIDE STUDY. 

 "W. ~EL. 



Associate Professor of Zoology and Comparative Anatomy, and 



Director of the Marine Laboratory of the Johns Hopkins 



Unifersity : formerly Assistant in the Boston Society 



of Natural History. 



The book contains directions for studying the general anatomy, the micro- 

 scopic structure, and the development of selected types of animal life ; and it 

 also describes the method of collecting and preserving the forms which are de- 

 scribed. The following are some ot the subjects treated : 



The structure of Vorticellae, 



The reproduction of Vorticellse, 

 The structure of a Sponge, 



The structure and growth of a Campanularian Hydroid, 



The structure and development of a Hydro-Medusa, 

 The general anatomy of a Starfish, 



The microscopic anatomy of a Starfish. 



The general anatomy of a Sea Urchin, 



The embryology and metamorphosis of the Sea Urchin and Starfish, 

 The general anatomy of the Earthworm, 



The microscopic structure of the Earthworm, 

 The anatomy of the Leech, 



The anatomy of a Crab. 



The metamorphosis of a Crab, 



The structure and development of Cyclops, 

 The anatomy of a Grasshopper, 



The general anatomy of Unio, 



The microscopic anatomy of Unio, 



The embryology and metamorphosis of Unio, 



The anatomy and embryology of the Squid. 



Illustrated by nearly two hundred cuts from the author's draw- 

 Ings, or from drawings made from nature under his direction. 



S. E. CASSINO, Publisher, 



BOSTON, MASS. 



