HOT SPRINGS. ARKANSAS. 



51 



No. 20. — Superior spring (north). 



[Situated on the side of Hot Springs Mountain. Sample for mineral analysis was taken January 9, 

 1901. Temperature on December 3, 1900, was 46.3° C, and on January 8, 1901, was 44.5° C] 



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

 Nitrogen, 8.97; oxygen, 3.75; carbon dioxide (free), 13.58; carbon dioxide (set free 

 from biearbonates on evaporating to dryness), 21.68; hydrogen sulphide, none. 



Formula and name. 



SiO-> (silica) 



S0 4 (sulphuric acid radicle) . . . 

 HCO3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



NOo (nitrous acid radicle) 



PO4 (phosphoric acid radicle ) . 

 BO2 (metaboric acid radicle) . . 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



Kf> (iron and aluminum) 



Mn (manganese) 



Ca (calcium) 



Mg (magnesium) 



K (potassium) 



Na (sodium) 



La (lithium) 



NH 4 (ammonium) '. 



Total 



Total solids 



Albuminoid ammonia 



Oxygen required 



Parts per 

 million. 



39. 90 



7.31 



133. 20 



.31 



.0010 



.13 



C) 



None. 



2.43 



Trace. 



Trace. 



.09 



.11 

 37.43 

 4.23 

 1.47 

 4.40 

 Trace. 



.013 



Per cent of 

 total 



inorganic 

 material in 



solution. 



231.0240 



163. 50 

 None. 

 .55 



17.27 



3.16 



57. 66 



.13 



.06 



1.05 



.04 



.05 



16.20 



1.83 



.64 

 1.90 



.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. 



Parts per 

 million. 



Per cent of 



total 



inorganic. 



material in 



solution. 



NH4CI (ammonium chloride) 



LiCl (lithium chloride) 



KC1 (potassium chloride) 



NaCl (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Na.jS0 4 ( sodium sulphate ) 



NaB0 2 (sodium metaborate) 



Ca3(P0 4 ) 2 (calcium phosphate) 



NaX0 3 (sodium nitrate) 



NaN0 2 (sodium nitrite) 



Xa'HCOs) (sodium bicarbonate) 



Mgi HC0 3 ) 2 (magnesium bicarbonate) 

 C'a 1 HC0 3 ) 2 "( calcium bicarbonate) 



At O-i (* err i c oxide and alumina) 



Mn/j 4 (mangano-manganie oxide) ... 



CaSi0 3 (calcium silicate) 



Si0 2 ( silica) 



Total 



0.039 

 Trace. 



2.80 



1.76 

 Trace. 

 Trace. 

 10.82 



(a) 



.21 

 .42 



.0015 

 .33 

 25.47 

 148. 35 



.13 



.15 



2.10 



38.79 



231. 3705 



0.02 



1.21 

 .76 



4.68 



.09 

 .18 



.14 

 11.01 

 64. 12 



.05 



.06 



.91 



16.77 



100 



"Small amount. 



