TABLE n. 



Nereis Eggs Exposed to Homogeneous Beams of I3-Rays Separated by a Variable 

 Magnetic Field but Travelling through Paths of the Same Radius of Curvature. 



Aug. 1, 1918. H variable. R = 8.45 cm. 0.065 cm. slit. Strength of ema- 

 nation = 51.5 millicuries. Time of radiation = 60 min. Twenty-five eggs 

 measured in each lot. 



Aug. 29, 1918. H variable. R = 13.1 cm. 0.065 cm. sUt. Strength of ema- 

 nation = 70 millicuries. Time of radiation = 90 min. 



Aug. 29, 1918. H variable. R = 8.45 cm. 0.065 cm. slit. Strength of ema- 

 nation = 70 millicuries. Time of radiation = 90 min. 



Aug. 30, 1918. H variable. R = 7.65 cm. 0.01 cm. slit. Strength of ema- 

 nation = 60 millicuries. Time of radiation = 75 min. 



42 



