76 



HOT SPRINGS, ARKANSAS. 



No. 45. — Kidney spring (cold). 



[Situated on side of Hot Springs Mountain. 

 Temperature on January 5, 1901, was 13° C] 



Sample for mineral analysis taken May 19, 1901. 



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

 Nitrogen, 15.30; oxygen, 5.29; carbon dioxide (free), 28.55; carbon dioxide (set free 

 from bi carbonates on evaporating to dryness), 2.24; hydrogen sulphide, none. 



Formula and name. 



SiOo (silica) 



S0 4 (sulphuric acid radicle) . . . 

 HCO s (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



N0 2 (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . 

 B0 2 (metaboric acid radicle) . . 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



\J> (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. 



15. 06 



2.29 



15.14 



.44 



.0007 



Trace. 



(a) 



None. 



2.00 



Trace. 



m 



.34 



Trace. 

 3.79 

 1.45 

 1.02 

 2.23 

 Trace. 

 .021 



43. 7817 



41 



.016 

 .80 



Per cent of 



total 



inorganic 



material in 



solution. 



34.40 

 5.23 



34.58 

 1 



4.57 



.78 



8.66 

 3.31 

 2.33 

 5.09 



.05 



100 



Amount of 

 water used 



for each 

 determina- 

 tion. 



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 



200 

 500 

 200 



a Small amount. b Heavy trace. 



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) 



NaoS0 4 (sodium sulphate) 



NaBOo (sodium inelaborate) 



Ca :i (P0 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaN0 2 (sodium nitrite) 



Na ( HCO3) ( sodium bicarbonate ) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) 



Ca(HC0 3 ) 2 "(calcium bicarbonate) 



Mn(HCO ;! )» (manganous bicarbonate) 



AlO I (^ err i c oxide and alumina) ... 



CaSi0 3 (calcium silicate) 



Si0 2 (silica) 



Total 



Parts per 

 million. 



0.062 

 Trace. 

 1.94 

 1.72 

 Trace. 



(a) 



3.39 



( b ) 



Trace. 

 .60 

 .0011 

 1.05 

 8.73 

 9.43 

 Trace. 



.49 



4.25 



12.86 



44. 5231 



Per cent of 



total 



inorganic 



material in 



solution. 



0.14 



4.36 

 3.86 



7.61 



1.35 



2.36 

 19.61 

 21.18 



1.10 



9.55 



28.88 



100 



a Heavy trace. 



fc Small amount. 



