54 



HOT SPRINGS, ARKANSAS. 



No. 23. — TV/,/ sprint) (north). 



[Situated on the side of Hot Springs Mountain in the roadway. Sample for mineral analysis was 

 taken January 9, 1901, Temperature on December 0, 1900, was 62.° C, and on January s, 1901, was 

 62.4° C.J 



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

 Nitrogen, 8.36; oxygen, 2.68; carbon dioxide (free), 10.84; 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) . . . 

 HC0 3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



NO-2 (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . 

 BO-2 (metaboric acid radicle) . . 



As6 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. 



46.25 

 7.97 

 169. 60 

 Trace. 

 .0010 

 Trace. 



( a ) 



None. 

 2.43 

 Trace. 

 Trace. 



.09 



.16 

 46.92 

 4.82 

 1.74 

 5.11 

 Trace. 



.032 



285. 1230 



200 



.001 

 .25 



Per cent of 



total 



inorganic 



material in 



solution. 



16.22 



2.80 



59.48 



.85 



.03 



.06 



16.46 



1.69 



.61 

 1.79 



.01 



100 



Amount of 

 water used 

 for each 

 determina- 

 tion. 



c. c. 



10,000 



4,000 



100 



100 



100 



2,000 



3,500 



3,500 



700 



8,000 



8,000 



4,000 



4,000 

 4,000 

 4,000 

 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) 



NaBOo (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) 



Mn(HC0 3 ) 2 (manganous bicarbonate) 



AI0O0 1 (fe™ oxide and alumina) 



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

 Si0 2 (silica) 



Total 



Parts per 

 million. 



0.095 

 Trace. 

 3.32 

 1.30 

 Trace. 

 Trace. 

 11.79 

 (.) 



Trace. 

 Trace. 

 .0015 

 2.84 

 29.02 

 190. 03 

 .33 



.13 



.08 

 46.25 



285. 1865 



Per cent of 



total 



inorganic 



material in 



solution. 



0.03 



1.16 

 .46 



4.13 



.99 

 10.18 

 66.63 



.12 



.05 



.03 

 16.22 



100 



* Small amount. 



