CHEMICAL AND PHYSICAL PAPERS. 69 



situation on one of the numerous trails leading across the state to the 

 mountains and to California. It is situated on the southern slope of 

 the broad valley of the Marais des Cygnes, about four miles northwest 

 of Ottawa. The temperature of the water is 58"^ F., and the flow is 

 450 gallons per hour. There are no rare constituents in the water, as 

 the following analysis shows : 



Grams per liter. 



IONS. 



Sodium (Na) 0068 



Calcium (Ca) 0146 



Magnesium (Mg) 0018 



Iron (Fe) 0004 



Chlorine (01) 0106 



Sulphuric acid ion (SO4) 0074 



Silicic acid ion (SiOs) 0238 



RADICALS. 



Sodium oxide (Na20) 0092 



Calcium oxide (CaO) 0205 



Magnesium oxide (MgO) 0031 



Iron oxide (FeO) 0005 



Chlorine (CI) 0106 



Sulphuric anhydride (SO3) 0062 



Silicic anhydride (Si02) 0180 



Carbonic anhydride (CO2! 0.327 



Water (H2O) 0067 



Oxygen equivalent 0024 



Total 1051 



Hypothetically combined as follows: 



Grams Grains 



per liter. per gallon. 



Sodium chloride (NaCl) 0174 1 .018 



Calcium sulphate (CaS04) 0106 .618 



Calcium bicarbonate (CaH2(C03)2) 0466 2.721 



Magnesium bicarbonate (MgH2(C0.3)2) 0113 .661 



Iron bicarbonate (FeH2(C03)2) 0012 .071 



Silica (Si02> 0180 1.049 



Totals 1051 6.138 



There is a demand for waters that are extremely pure in the treat- 

 ment of certain diseases where an abundance of mineral matter is in- 

 jurious. This water contains very much less solid matter than such 

 waters as the Waukesha, Jackson Lithia, etc. — waters that are recom- 

 mended more for their purity than for any special ingredients that 

 they contain. There are waters found in the sandstone and granite 

 regions of the East that are as pure as the California spring, and some 

 actually contain less than two grains per gallon, but it is interesting 

 to notice that we have in the middle West just as good waters, and 

 that they are abundantly supplied in certain localities. 



