42 



HOT RPRTNGS, ARKANSAS. 



No. 11. — Little Iron spring [mirth). 



[Situated at the base of Hot Springs Mountain and empties into a reservoir. Sample for mineral 

 analysis was taken January 9, 1901. Temperature on January 8, 1901, was 56.8° C] 



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

 Nitrogen, 8.31; oxygen, 3.56; carbon dioxide (free), 1.88; carbon dioxide (set free 

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



Formula and name. 



Si0 2 (silica) 



S0 4 (sulphuric acid radicle) 



HCO3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



N0 2 (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . . 

 BOo (metaboric acid radicle) . . . 



ASO4 (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. 



Per cent of 



total 



inorganic 



material in 



solution. 



Amount of 

 water used 

 for each 

 determina- 

 tion. 



47.44 



8.28 



160. 50 



.18 



.0012 



Trace. 



(a) 



None. 

 2.71 

 Trace. 

 Trace. 



.12 



.11 

 43.84 

 4.98 

 1.66 

 5.18 

 Trace. 



.095 



17.24 

 3.00 



58.35 

 .07 



c. c. 



10, 000 



4,000 



100 



100 



100 





2,000 





3,500 





3,500 



700 



8,000 



8,000 



.99 





.04 



.04 



15.95 



1.81 



.60 



1.88 



4,000 



4,000 

 4,000 

 4,000 

 4,000 

 4,000 

 4,000 



.03 



500 



275. 0962 



100 







195.50 

 .049 

 .20 





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) 



NaoS0 4 (sodium sulphate) 



NaB0 2 (sodium metaborate) 



Ca 3 (P04) 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 )o (ferrous bicarbonate) 



Mn(HC6 3 )» (manganous bicarbonate). 

 Si0 2 (silica) 



Total. 



Parts per 

 million. 



0.282 

 Trace. 



3.16 



1.68 

 Trace. 

 Trace. 

 12.25 



(a) 



Trace. 



.25 



.0018 



1.75 



29.98 



177. 55 



.38 



.35 



47.44 



275. 0738 



Per cent of 



total 



inorganic 



material in 



solution. 



0.10 



1.15 

 .61 



4.45 



.09 



.63 



10.90 



64.55 



.14 



.13 



17.25 



100 



* Small amount. 





