MINERAL    RESOURCES    OF    BIGHORN    BASIN.  315 
amounts.     An  analysis  of  this  water,  made  by  Prof.  E.  E.  Slosson,  of  the  University  of 
Wyoming,  is  here  given: 
Analysis  of  water  of  Thermopolis  Hot  Springs,  Wyoming. 
Grains  per  gallon. 
Si02 4.986 
Fe203  and  AI2O3 227 
KC1 10. 249 
Na2SOi 15. 1 10 
Mg2S04 19. 443 
CaS04 13. 156 
CaCOs 40. 454 
NaCl 26. 195 
129.811 
There  are  two  sanitariums  and  a  large  plunge  located  near  the  spring  and  the  place  is 
rapidly  becoming  a  popular  health  resort  for  the  people  of  northwestern  Wyoming. 
SULPHUR. 
Sulphur  occurs  in  local  deposits  on  the  south  side  of  Shoshone  River,  at  the  lower  end  of 
Shoshone  Canyon,  and  along  the  west  side  of  Sulphur  Creek  for  about  2  miles  above  its 
mouth.  It  was  deposited  by  heated  waters  and  gas  from  the  numerous  geysers  that  once 
existed  in  this  region.  A  large  amount  of  prospecting  has  been  done,  with  a  view  of  develop- 
ing this  resource.  The  material  appears  to  be  of  excellent  quality  and,  if  it  occurs  in  suffi- 
ciently large  quantities,  might  be  profitably  worked.  Sulphur  also  occurs  in  the  hot-spring 
deposits  at  Thermopolis. 
