44 



HOT SPRINGS, ARKANSAS. 



No. 13. — Little Iron spring (south I. 



[Situated at the base of Hot Springs Mountain and empties into ;i resei 

 uilysis was taken January 9, 1901. Temperature was 56.3° January s. 1901 



reservoir. Sample for mineral 



analysis 



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

 Nitrogen, 7.98; oxygen, 3.31; carbon dioxide (free), 3; carbon dioxide (set free 

 from bicarbonates on evaporating to dryness), 29.46; hydrogen sulphide, none. 



Formula and name. 



Si0 2 (silica) 



SO/Csulphuric acid radicle) 



HC0 3 (bicarbonic acid radicle) 



NO3 (nitric acid radicle) 



N0 2 (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . . 

 B0 2 (metaboric acid radicle)... 



As6 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



"t ?> (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. 



46.17 



8.35 



166.50 



.18 



.0012 



Trace. 



( a ) 



None. 



2.57 



Trace. 



Trace. 



.11 



.12 

 46.22 

 4.93 

 1.60 

 4.87 

 Trace. 



.043 



281. 6642 



201. 50 

 .017 

 .25 



Per cent of Amount of 

 total water used 

 inorganic 1 for each 

 material in deterrnina- 

 solution. I tion. 



16.40 



2.96 



59.11 



.06 



.91 



.01 



.04 



16.41 



1.75 



.57 

 1.73 



.02 



100 



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) 



NaoS04 (sodium sulphate) 



NaBOo (sodium metaborate) 



Ca 2 ( P0 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaN0 2 (sodium nitrite) 



Na(HC0 3 ) (sodium bicarbonate) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) 



Ca(HC0 3 ) 2 (calcium bicarbonate) 



Fe(HC0 3 ) 2 (ferrous bicarbonate) 



Mn(HC0 3 )" 2 (manganous bicarbonate) 

 Si0 2 (silica) 



Total 



Parts per 

 million. 



Per cent of 



total 



inorganic 



material in 



solution. 



0.128 

 Trace. 

 3.05 

 1.70 

 Trace. 

 Trace. 

 12.36 



(a) 



Trace. 



.25 



.0018 



.44 



29.68 



187. 19 



.35 



.38 

 46.17 



281. 6998 



0.04 



1.08 

 .60 



.09 



.16 



10. 55 



66.45 



.12 



.13 



16.39 



100 



a Small amount. 



