HOT SPRINGS, ARKANSAS. 



43 



No. 12. — Little Geyser spring. 



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

 1901. Temperature on November 22, 1900, was 36.2° C, and on January 8, 1901, was 36.2° C. This 

 spring could not be reached, so the temperature was taken about 70 feet from the spring.] 



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

 Nitrogen, 9.83; oxygen, 4.61; carbon dioxide (free), 10.74; carbon dioxide (set free 

 from bi carbonates "on evaporating to dryness), 17.81; hydrogen sulphide, none. 



Formula and name. 



Si0 2 (silica) 



S0 4 ~(sulphuric acid radicle) . . . 

 HC0 3 (bicarbonic acid radicle) 



N0 3 (nitrate acid radicle) 



NOo (nitrous acid radicle) 



PO4 (phosphoric acid radicle). 

 B0 3 (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. 



32.52 



6.73 



93.90 



.18 



.0008 



.13 



( a ) 



None. 



2.43 



Trace. 



Trace. 



.11 



Trace. 

 25.89 

 3.18 

 1.31 

 3.68 

 Trace. 

 .025 



Percent of 



total 



inorganic 



material in 



solution. 



170. 0858 



129. 50 

 .004 

 .20 



19.07 



3.96 



55.22 



.10 



.08 



1.43 



.06 



Amount of 

 water used 



for each 

 determina- 

 tion. 



15.24 



1.87 



.78 



2.17 



.02 



100 



c. c. 



'16,000 



4,000 



100 



100 



100 



2,000 



3,500 



3,500 



700 



8,000 



8,000 



4,000 



9, 000 

 4,000 

 4,000 

 4,000 

 4,000 

 4,000 

 500 



200 

 500 

 200 



tt Small amount. 

 HYPOTHETICAL FORM OF COMBINATION. 



Formula and name. 



Parts per 

 million. 



Per cent of 



total 



inorganic 



material in 



solution. 



NH4CI (ammonium chloride) 



LiCl (lithium chloride) 



KC1 (potassium chloride) 



NaCl (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Na. 2 S0 4 (sodium sulphate) 



MgS0 4 (magnesium sulphate) 



NaB0 2 (sodium metaborate) 



Ca £ (P0 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaNOo (sodium nitrite) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) 



Ca(HC0 3 )o"( calcium bicarbonate) 



Fe ( HC0 3 ) 2 (ferrous bicarbonate) 



Mn(HC0 3 ) 2 (manganous bicarbonate) 

 Si0 2 (silica) 



Total 



0.074 

 Trace. 



2.50 



1.96 



Trace. 



Trace. 



8.76 



1.01 



(a) 



.21 



.25 



.0012 

 17.94 

 104. 53 



.34 

 Trace. 

 32.52 



170. 0952 



0.04 



1.46 

 1.15 



5.15 

 .59 



.12 

 .14 



10. 56 



61.46 



.20 



19.13 



100 



a Small amount. 



