R. R. Ramsey — Radioactivity of Spring Water. 313 







Indiana Springs. 







39- 9-1 



86-30-3 



June 



4, 



11-8 



1260- 



39- 9- 



86-30-3 



June 



4, 



11-4 



1310- 



39- 8-5 



86-30-4 



June 



4, 



12- 



725- 



39- 8-4 



86-30-4 



June 



4, 



12- 



510- 



39- 85 



86-29-7 



June 



4, 





790- 



39- 8'6 



86-29-6 



June 



4, 



13- 



540- 



39- 8-6 



86-29-9 



June 



4, 





570- 



39- 885 



86-30-15 



June 



4, 



12- 



700- 



39- 945 



86-31-1 



June 



4, 





700- 



39- 9-4 



86-31-1 



June 



4, 



13- 



535- 



39-10-1 



86-33-2 



June 



10, 



12- 



355- 



39-10-6 



36-32-3 



June 



10, 



11-8 



1120- 



xio- 



In a few cases the spring has been measured two or more 

 times, the result being different each time. The emanation con- 

 tent of the springs varies with the flow. Some of the higher 

 values are obtained from " wet weather " springs, the 

 measurement being made during a wet period. 



Dept. of Physics, Indiana University, 

 June 19, 1915. 



