A. C. REDFIELD AND E. M. BRIGHT 



41 



Results. 



Seventeen experiments were conducted on Nereis eggs with these 

 methods. Of these nine of a preKminary nature were rejected either 

 because insufficient data were obtained for determining the effective 



TABLE I. 



Nereis Eggs Exposed to Homogeneous Beams of fi-Rays Separated by a Uniform 

 Magnetic Field but Travelling through Paths of Various Radii of Curvature. 



July 9, 1918. H = 477 gauss. R variable. 0.1 cm. slit. Strength of ema- 

 nation = 46 millicuries. Time of radiation = 90 min. Twelve eggs measured 

 in each lot. 



Aug. 21, 1918. H = 502 gauss. R variable. 0.065 cm. slit. Strength of 

 emanation = 58.4 millicuries. Time of radiation = 120 min. Eight to twelve 

 eggs measured in each lot. 



intensity from the physiological change obtained, or because too few 

 determinations were made, or because the change in the membrane 

 volumes obtained were too small for accurate measurement. One 

 experiment was rejected because the measurements obtained were 



