KAJSTEMATSU SUGIURA AND GIOACCHINO FAILLA 



427 



Weeks 01234567Q 



Fig. 2. Charts showing elTcct of radium radiation on the growth of mice. 

 Source of radiation, one tube of radium emanation, 14 mm. long and 0.5 mm. 

 in diameter. Distance of source, 2 cm. No metallic filter. Divided doses are 

 shown in Table I. 



