IV CONTENTS 



No. 3. AUGUST 



Robert Chambers, Jr. Microdissection studies. II. The cell aster: a 

 reversible gelation phenomenon. One plate 483 



William L. Dolley, Jr. The rate of locomotion in Vanessa antiopa in 

 intermittent light and in continuous light of different illuminations, 

 and its bearing on the "continuous action theory" of orientation 507 



Wm. a. Kepner and a. M. Fosheb. Effects of light and darkness on the eye 



of Prorhynchus applanatus Kennel. Three text figures and one plate.. . 519 



W. H. LoNGLEY. Studies upon the biological significance of animal colora- 

 tion. Eight figures (one plate) 533 



