BIOLOGICAL BULLETIN 



OF THE 



flDarine Biological Xaborator^ 



WOODS HOLE, MASS. 



VOL. XLVII 



NOVEMBER, 1924 



No. 5 



WHITE, GERTRUDE M. 



GLASER, OTTO 



LOEB, LEO, AND 

 BLANCHARD, K. C. 



BUDINGTON, ROBERT A. 



SMITH, H. W., AND 

 CLOWES, G. H. A. 



CONTENTS 



Reactions of the Larva of the Shrimp, Pal<z- 

 monetes vulgaris, and the Squid, Loligo 

 pealii, to Monochromatic Light 265 



Fertilization, Cortex, and Volume 274 



Vital Staining of Amoebocyte Tissue of Limu- 

 lus 284 



The Manner of Copidation in a Turbellarian 

 Worm, Planaria maculata 298 



The Influence of Hydrogen Ion Concentration 

 on Unfertilized Arbacia, Asterias and 

 Chatopterus Eggs 304 



PUBLISHED MONTHLY BY THE 



MARINE BIOLOGICAL LABORATORY 



PRINTED AND ISSUED BY 



LANCASTER PRESS, INC. 

 LANCASTER, PA. 



AGENT FOR GREAT BRITAIN 



WHELDON & WESLEY, LIMITED 

 2, j and 4 Arthur Street, New Oxford Street, London, W. C. 2 



Single Numbers, 75 Cents. Per Volume (& numbers), S3.OO 



Entered October 10, 1002. at Lancaster, Pa., as second-class matter under Act of Congress of July 16. 1894. 



