HOT SPRINGS, ARKANSAS 



55 



No. 24. — Twin spring (south). 



[Situated on side of Hot Springs Mountain at side of road. Sample for mineral analysis taken May 

 19, 1901. Temperature on December 7, 1900, was 62.3° C, and on January 8, 1901, was 60.3° C] 



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

 Nitrogen, 8.03; oxygen, 3.19; carbon dioxide (free), 4.12; carbon dioxide (set free 

 from bicarbonates on evaporating to dryness), 31.14; hydrogen sulphide, none. 



Formula and name. 



Si0 2 (silica) 



S0 4 (sulphuric acid radicle) 



HC0 3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



XOo (nitrous acid radicle) 



P0 4 (phosphoric acid radicle) . . 

 BOo (metaboric acid radicle) . . . 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



iff (iron and aluminum) . 



Mn (manganese). 



Ca (calcium) 



Mg (magnesium). 



K (potassium) 



Na (sodium) 



Li (lithium) 



XH 4 (ammonium) 



Parts per 

 million. 



46.85 

 7.81 

 168. 80 

 Trace. 

 .0008 

 Trace. 



(a) 



None. 



2.83 



Trace. 



Trace. 



.22 



.15 

 46.75 

 4.92 

 1.74 

 4.78 

 Trace. 

 .035 



Total 284. 8858 



Total solids 



Albuminoid ammonia 

 Oxygen required 



224. 50 

 .002 

 .15 



Per cent of 

 total 



inorganic 

 material in 



solution. 



16.44 



2.74 



59.25 



.99 



.05 



16.41 



1.73 



.61 

 1.69 



.01 



100 



Amount of 

 water used 



for each 

 determina- 

 tion. 



c.c. 



S, (11)11 



4,000 



100 



100 



100 



2,000 



3,000 



3,000 



600 



5, 400 



5,400 



7,500 



7,500 

 2,000 

 2,000 

 4,000 

 4,000 

 4,000 

 500 



200 

 500 

 200 



a Small amount. 

 HYPOTHETICAL FORM OF COMBINATION. 



Formula and name. 



NH4CI (ammonium chloride) 



LiCl (lithium chloride) 



KC1 (potassium chloride) 



NaCl (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Na^SO.! (sodium sulphate) 



NaB0 2 (sodium metaborate) 



Ca 3 (P6 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaN0 2 (sodium nitrite) 



Na(HC0 3 ) (sodium bicarbonate) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) . 



Ca(HC0 3 ) 2 ~(calcium bicarbonate) 



Fe(HC0 3 ) 2 (ferrous bicarbonate) 



Mn(HC0 3 ) 2 (manganous bicarbonate). 

 Si0 2 (silica") 



Total. 



Parts per 

 million. 



0.104 



Trace. 



3.31 



1.96 



Trace. 



Trace. 



11.56 



(.) 



Trace. 

 Trace. 



.0012 



.95 



29.62 



189. 34 



.70 



.48 

 46.85 



284. 8752 



Per cent of 



total 



inorganic 



material in 



solution. 



0.04 



1.16 

 .69 



4.06 



.33 



10. 39 



66.47 



.24 



.17 



16. 45 



100 



» Small amount. 



