HOT SPRINGS, ARKANSAS. 



73 



No. 42. — Magnesia spring. 



[Situated at base of Hot Springs Mountain, underJMagnesia bath house. Sample for mineral anal- 

 ysis taken May 19, 1901. Temperature on January 8, 1901, was 58.3° C] 



Gases (number of cubic centimeters per liter at 0° C. and 760 mm. pressure). — 

 Nitrogen, 9.05; oxygen, 2.23; carbon dioxide (free), 13.64; carbon dioxide (set free 

 from bicarbonates on evaporating to dryness), 30.58; hydrogen sulphide, none. 



Formula and name. 



Si0 2 (silica) 



SO.(~(sulphuric acid radicle) . . . 

 HC0 3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



NOo (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . 

 B0 2 (metaboric acid radicle) . . . 



As0 4 (arsenic acid radicle) 



CI ( clorine) 



Br (bromine) 



I (iodine) 



\f\ (iron and aluminum) 



Mn (manganese) 



Ca (calcium) 



Mg (magnesium) 



K (potassium) 



Na (sodium) 



Li (lithium) 



NH 4 (ammonium) 



Total 



Total solids 



Albuminoid ammonia 



Oxygen required 



Parts per 

 million. 



49. 63 



8.40 



166. 50 



.44 



.0008 



Trace. 



C) 



None. 



2.83 



Trace. 



Trace. 



.33 



.07 

 45.93 

 5.19 

 1.72 

 5.08 

 Trace. 

 .058 



286. 1788 



Per cent of 



total 



inorganic 



material in 



solution. 



203 

 None. 

 ( b ) 



17.34 



2.94 



5S.19 



.15 



.99 



.11 



.02 



16.06 



1.81 



.60 

 1.77 



.02 



Amount of 

 water used 

 for each 

 determina- 

 tion. 



100 



c, c. 



8,000 



4,000 



100 



100 



100 



2,000 



3,000 



3,000 



600 



5,400 



5,400 



9,000 



9,000 

 2,000 

 2,000 

 4,000 

 4,000 

 4,000 

 500 



100 

 500 

 200 



» Small amount. 



''Not determined. 



HYPOTHETICAL FORM OF COMBINATION. 



Formula and name. 



Parts per 

 million 



Per cent of 



total 



inorganic 



material in 



solution. 



NH^l (ammonium chlorid' I 



LiCl (Lithium chloride) 



KC1 (potassium chloride) 



NaCI (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Na 2 S0 4 (sodium sulphate) 



NaBO» (sodium metaborate) 



Ca 3 (P0 4 ) 2 (calcium phosphate) 



Na\N0 3 (sodium nitrate) 



NaNO» (sodium nitrite) 



Na(HC0 3 (sodium bicarbonate) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) 

 Ca(HC0 3 ) 2 ~(calcium bicarbonate) 



AUO f (* erric oxide and alumina) 



M1I3O4 (mangano-manganie oxide)... 

 Si0 2 (silica) 



Total 



0.17i 

 Trace. 

 3. 28 

 1.91 



Trace. 

 Trace. 

 12. 43 



(*) 



Trace. 



.60 



.0012 



.50 



31. 24 



186.02 



.48 



.10 

 49.63 



286. 3632 



0.06 



1.14 

 .67 



4.34 



.21 



.17 

 10.91 

 64.96 



.17 



.04 



17.33 



100 



a Small amount. 



