BIOLOGICAL BULLETIN 



OF THE 



flDarine Biological laboratory 



WOODS HOLE, MASS. 



VOL. XLVII OCTOBER, 1924 No. 4 



CONTENTS 



NUZUM, M. F., AND Can the Earthworm Pharynx Epithelium Pro- 

 RAND, H. \V. duce Central Nervous Tissue? 213 



WOODBRIDGE, HELEN. Botryllus schlosseri (Pallas}: The Behavior of 



the Larva with Special Reference to the 

 Habitat 223 



COPELAND, M., AND The Chemical Sense and Feeding Behavior of 

 WIEMAN, H. L. Xei-eis virens Sars 231 



KEPNER, \Y. A., AND Nematocysts of Microstoma 239 



BARKER, J. F. 



BILLS, CHARLES E. Some Effects of the Lower Alcohols on Para- 



mecinm 253 



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 Entered October 10. 1902, at Lancaster. Pa., as second-class matter under Act of Congress of July 16, 1804- 



