628 Lester — Radioactive Properties of the 



Table I. 



No. 



Temp. 



Curies Ra Em. per 

 liter x 10- 10 



Water 



Gas 



Mache 

 units per liter 



Water 



Gas 



Perma- 

 nent 

 activity 

 of water 



Gram Ra 



per liter 



x 10- 10 



Remarks* 



1 



11-0 



2-15 



3 



15-5 



1-53 



5 



44-5 



6-70 



7 



48-0 





11 



20-5 



trace 



12 



13-5 



26-75 



13 



12-0 



41-44 



14 



10-0 



4-33 



15 



15-0 



6-08 



15 



12-3 



14-7 



16 





12-61 



17 



10-0 



0-92 



17 



12-5 



2-7 



18 



42-5 



10-35 



21 



34-6 



3-58 



22 



19-5 





23 



15-6 



2-05 



*25 



140 



1-04 



26 



8-5 



5-85 



27 



18-5 



16-80 



28 



14-5 



21-02 



*31 



6-7 



2-38 



*32 



6-7 



0-91 



34 



8-0 



23-63 



35 



14-3 



10-73 



35 



14-5 



22-4 



36 



29-4 





38 



26-8 



none 



39 



12-8 



trace 



*42 



9-4 



1-87 



43 



130 



6-41 



45 



28-3 



1504 



*47 





0-73 



*48 





0-27 



*49 





10-10 



52 



26-0 



8-35 



52 



21-0 



19-6 



53 



25-0 



4-73 



54 



51-5 





55 



51-0 





58 



51-5 



0-87 



63 



50-0 





64 







67 



9-5 



none 



69 





none 



71 



56-5 



15-14 



72 



8-5 



11-30 



73 



160 



18-40 



27-84 



none 



78-0 



23-2 



129-5 



101-6 



13-74 

 19-68 



27-30 

 0-44 



414-0 



0-58 

 0-41 

 1-81 



trace 

 7-22 



11-19 

 117 

 1-64 

 2-49 

 3-40 

 0-25 

 0-43 

 2-80 

 0-97 



' 0-55 

 0-28 

 1-58 

 4-54 

 5-68 

 0-64 

 0-25 

 6-38 

 2-90 

 3-74 



none 

 trace 

 0-51 

 1-73 

 4-06 

 0-20 

 007 

 2-73 

 2-25 

 3-25 

 1-28 



0-24 



none 

 none 

 4-09 

 305 



4-97 



7-52 



21-05 



0-074 



6-26 



34-98 



27-42 



3-71 



5-32 



7-37 

 012 



111-8 



0-197 



0-180 



a Letters given in this column are explained in the text. 



