3-1 



HOT SPRINGS, ARKANSAS. 



No. 



Arlington spring. 



[Situated on the side of Hot Springs Mountain. Sample for mineral analysis was taken January 9, 

 1901. Temperature on November 8, 1900, was 61.7° C, and on January 8, 1901. was 61.3° C] 



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

 Nitrogen, 8.57; oxygen, 2.27; carbon dioxide (free), 13.08; carbon dioxide (set free 

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



Formula and name. 



Si0 2 (silica) 



S0 4 (sulphuric acid radicle) . . . 

 HCO3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



N0 2 (nitrous acid radicle) 



P0 4 (phosphoric acid radicle) . 

 BOo (metaboric acid radicle) . . 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I ( iodine) 



";?[-(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. 



Percent of 



total 



inorganic 



material in 



solution. 



44.89 

 7.76 

 166. 50 

 Trace. 

 .0007 

 Trace. 



(a) 



None. 



2.50 



Trace. 



Trace. 



.28 



.22 



46.36 



4.88 



1.65 



4.52 



Trace. 



.068 



279.6287 



202 



.010 

 .25 



15.96 



2.78 



59. 58 



.90 



.11 



.08 



16.60 



1.74 



.60 

 1.63 



.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 



800 



3,200 



3,200 



2,000 



2,000 

 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 2 S0 4 (sodium sulphate) 



NaB0 2 (sodium metaborate) 



Ca 3 ( P0 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaNOo (sodium nitrite) 



Na( HC0 3 ) (sodium bicarbonate) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) 

 Ca(HC0 3 ) 2 (calcium bicarbonate) 



ALO 1 (f e ™ e oxide and alumina) 



Mn 3 6 4 (mangano-manganic oxide) ... 

 Si0 2 (silica) 



Total 



I Per cent of 

 Parts ner total 



million. 1 ^organic 



material m 

 solution. 



0.202 



Trace. 

 3.15 

 1.44 



Trace. 



Trace. 



11.49 



Trace. 



Trace. 

 .0011 

 .80 



29. 38 

 187. 78 



.40 



.30 

 44.89 



279. 8331 



0.07 



1.13 

 .51 



4.11 



.29 



10.50 

 67.10 



.14 



.11 

 16.04 



100 



a Small amount. 



