1250 Wisconsin Academy of Sciences, Arts, and Letters. 
activities. This result is all the more striking because the 
waters from the different springs at Hot Springs show a marked 
resemblance in their general chemical characteristics. The 
most active spring was found 500 times more active than the 
least active. The same result was characteristic of the activities 
of some natural waters in different sections of Missouri. 2 In 
comparison with these results the springs in the vicinity of Mad¬ 
ison are characterized by uniformity in activity, and we may 
say that the similarity in geological formation of the spring 
area finds confirmation in the activity of the springs. 
The following table gives the activity of a few well known 
spring waters, European and American: 
TABLE II 
Name of Source. 
Location. 
Activity 
gX10~ 4 U. 
E. S. units 
(i X 10~ 4) 
Observer. 
Grabenbacker Quelle 
Gastein, Austria.... 
1550 
Mache, 1 
'Q^hncGbrnnupn 
Karlsbad, Austria.. 
174 
Mache & Meyer. 2 
iSLIIU&oUi uiiiiC'ii.. 
Ambrosius-brunnen.. 
Marien Bad, Austria 
16.2 
Mache & Meyer. 
Tr\b qtui {i.ho fl 
Baden. 
45.4 
Mache & Meyer. 3 
TT i rton brn n n p.n 
Odenwald, Hessen.. 
125 
Schmidt & Kurz. 4 
V a nmiplin 
PlombiSres, France.. 
94 
Curie & Laborde. 5 
flbnmpl 
Vichy, France. 
7 
Curie & Laborde. 6 
Kochbrunnen 
Wiesbaden, Germ’ny 
23 
Henrich. 6 
Tmnari a 1 SniMYiP* 
Hot Springs. Ark.... 
266 
Boltwood. 7 
JLlIliJtJi lcti Dyinig ...... 
nrmnino’ Snrinof 
Hot Springs, Ark.... 
7.7 
Boltwood. 7 
JL'IAyl/IBb •••••• 
<si W eet Sp T ’i r *°' s 
Sweet Springs, Mo... 
23.7 
M. & S. 8 
Apollinaris Spring 1 ... 
Yellowstone Park... 
31.9 
22.1 
Schlundt & Moore. 
Nymph Spring. 
Yellowstone Park... 
6.9 
4.8 
Schlundt & Moore. 
Merrill Springs. 
Madison, Wis. 
13.8 
16.6 
Schlundt. 
■ —a. 
1 Ber. d. Ak d. Wiss. Wien, Abt. IIA, 113, 1329. 
* Ber. Akd. Wiss. Wien, Abt. IIA, 114 , 355. 
3 Mache and Meyer, Ber. Ak. d. Wiss. Wien. Abt. IIA, 114, 545. 
4 Smhidt and Kurz, Physik. z. 7, 214 (1906). 
5 Curie and Laborde, Compt. rend. 142, 1462 (1906). 
7 Henrich. Ber. Ak. d. Wiss. Wien, Abt. IIA, 113 . 1092. 
0 Boltwood, 1. c. 
8 Moore and Schlundt, 1. c. 
The spring waters at Madison may then bo regarded as 
moderately radioactive. 
2 Moore and Schlundt, Trans. Am. Etectrochem. Soc. 8, 291 (1905). 
