56 



HOT SPRINGS, ARKANSAS. 



No. 25. — Old Hale spring. 



[Situated at base of Hot Springs Mountain, under Halo bath house. Sample for mineral analysis 

 taken May 19, 1901. Temperature on December 10, 1900, was 62.7° C, and on January s. 1901, was 62.9° C] 



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

 Nitrogen, 8.72; oxygen, 3.01; carbon dioxide (free), 9.72; carbon dioxide (set free 

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



Formula and name. 



Si0 2 (silica) 



SO4 (sulphuric acid radicle) 



HCO3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle ) 



N0 2 (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . . 

 B0 2 (metaboric acid radicle) . . . 



AsOj (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



V?\ (iron and aluminum) 



Mn (manganese) 



Ca (calcium) 



Mg (magnesium) 



K (potassium) 



Na (sodium) 



Li (lithium) 



NH4 (ammonium) 



Total 



Total solids 



Albuminoid ammonia. 

 Oxygen required 



Parts per 

 million. 



47.31 

 7.80 

 166.50 

 Trace. 

 .0007 

 Trace. 



( a ) 



None. 



2.50 



Trace. 



Trace. 



.19 



.29 

 46.82 

 5.01 

 1.69 

 4.73 

 Trace. 

 .028 



282. 8687 



199. 50 

 .002 

 .30 



Per cent of 



total 



inorganic 



material in 



solution. 



16.72 



2.76 



58.87 



Amount of 

 water used 



for each 

 determina- 

 tion. 



.07 



.10 



16.55 



1.77 



.60 

 1.67 



.01 



100 



c. c. 



8,000 



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. 



NH4CI (ammonium chloride) 



LiCl 1 lithium chloride) 



KC1 (potassium chloride) 



NaCl (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



N1I0SO4 (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) 



ATO?i ( f err i c ox ide and alumina) 



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



CaSi0 3 (calcium silicate) 



Si0 2 (silica) 



Total 



Parts per 

 million. 



0.083 



Trace. 



3.22 



1.50 



Trace. 



Trace. 



11.54 



C) 



Trace. 

 Trace. 

 .0010 

 1.46 

 30.16 

 186. 29 



.27 



.40 



2.38 



46.08 



283. 3840 



Per cent of 



total 



inorganic 



material in 



solution. 



0.03 



1.13 

 .63 



4.07 



.51 



10.64 

 65.75 



.10 



.14 



.84 



16.26 



100 



a Small amount. 



