

58 



HOT SPRINGS, ARKANSAS. 



No. 27. — Tunnel spring. 



[Situated at base of Hot Springs Mountain in a cluster of springs. Sample for mineral analysis taken 

 May 19, 1901. Temperature on January 8, 1901, was 51.9° CI 



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

 Nitrogen, 9; oxygen, 3.71; carbon dioxide (free), 8.60; carbon dioxide (set free 

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



Formula and name. 



Parts per 

 million. 



Per cent of 



total 



inorganic 



material in 



solution. 



Amount of 

 water used 



for each 

 determina- 

 tion. 



Si0 2 (silica) 



S0 4 (sulphuric acid radicle) 



HC0 3 (bicarbonic acid radicle) . 



N0 3 (nitric acid radicle) 



N0 2 (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . . 

 BOo (metaboric acid radicle) . . . 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br ( bromine) 



I (iodine) 



VT > (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 



49. 95 



7.98 



146. 70 



.22- 



.0010 



Trace. 



(a) 



None. 

 2.58 

 Trace. 

 Trace. 



.16 



.14 

 39.61 

 4.95 

 1.73 

 4.66 

 Trace. 



.037 



258. 7180 



188. 50 

 .010 

 .45 



.06 



.05 



15.32 



1.91 



.67 



1.80 



.01 



100 



c.c. 



s, 000 



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. 



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) 



NaBOo (sodium metaborate) 



Ca 3 (P0 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaNOo (sodium nitrite) - 



Na(HCO.j) (sodium bicarbonate) 



Mg(HC0 3 ) 2 (magnesium bicarbonate). 



Ca(HC0 3 ) 2 (calcium bicarbonate) 



Fe(HC0 3 )o (ferrous bicarbonate) 



Mn(HCO s ) 2 (manganous bicarbonate). 

 SiOo (silica) 



0.110 



Trace. 



3.29 



1.58 



Trace. 



Trace. 



11.81 



(a) 



Trace. 



.30 



.0015 



.47 



29.80 



160. 42 



.51 



.45 

 49.95 



0.04 



1.27 

 .61 



4.56 



.12 



.18 



11.52 



62. 02 



.20 



.17 



19.31 



Total - 258. 6915 



100 



a Small amount. 



