HOT SPEINGS, AKKANSAS. 



41 



No. 10. — Cave spring. 



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

 1901. Temperature on November 19, 1900, was 57.4° C, and on January 8, 1901, was 57.2° C] 



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

 Nitrogen, 7.80; oxygen, 3.13; carbon dioxide (free), 11.95; carbon dioxide (set free 

 from biearbonates on evaporating to dryness), 28.35; hydrogen sulphide, none. 



Formula and name. 



Si0 2 (silica) 



S0 4 "( sulphuric acid radicle) ... 

 HC0 3 (bicarbonic acid radicle) 



NO3 (nitric acid radicle) 



XOo (nitrous acid radicle) 



P0 4 (phosphoric acid radicle).. 

 BOo (metaborie acid radicle) . . . 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



Fe\ 

 Al/ 

 Mn (manganese) .. 



Ca (calcium) 



Mg (magnesium) . . 



K (potassium) 



Na (sodium) 



Li (lithium) 



XH 4 (ammonium). 



iron and aluminum) 



Total 



Total solids 



Albuminoid ammonia 

 Oxygen required 



Parts per 

 million. 



44. 55 

 7.73 

 160. 50 

 Trace. 

 .0016 

 Trace. 



(a) 



None. 



2.38 



Trace. 



Trace. 



.21 



.22 

 45. 07 

 4.94 

 1.60 

 4.37 

 Trace. 



.031 



271. 6026 



195. 50 

 .015 

 .25 



Per cent of 



total 



inorganic 



material in 



solution. 



16.40 



2.85 



59.09 



.08 



.08 



16.60 



1.82 



.59 



1.60 



.01 



100 



Amount of 

 water used 



for each 

 determina- 

 tion. 



8,000 



4,000 



100 



100 



100 



2,000 



3, 000 



3,000 



800 



3,200 



3,200 



2,000 



2, 000 

 2,000 

 2,000 

 4,000 

 4,000 

 4,000 

 500 



200 

 500 

 200 



a Small amount. 

 HYPOTHETICAL FORM OF COMBINATION. 



Formvda and name. 



XH4CI (ammonium chloride) 



LiCI (lithium chloride ) 



KC1 I potassium chloride) 



NaCl (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Xa._;S0 4 (sodium sulphate) 



NaBOo (sodium metaborate) 



Ca :i (P0 4 )2 (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaNOo (sodium nitrite) 



Nai HC0 3 ) sodium bicarbonate) 



Met HC0 3 ) 2 (magnesium bicarbonate) 

 Ca(HC0 3 ) 2 (calcium bicarbonate) 



JvLT&P lerric oxide and alumina) 



Mn :; 4 ( mangano-manganic oxide) ... 



CaSiO.3 (calcium silicate) 



8i0 2 (silica) 



Total 



Parts per 

 million. 



0. 092 

 Trace. 



3.05 



1.44 

 Trace. 

 Trace. 

 11.44 



(=,) 



Trace. 

 Trace. 



.0024 



.33 



29.74 



179. 75 



.30 



.30 



2.01 



43.51 



271. 9644 



Per cent of 



total 



inorganic 



material in 



solution. 



0.03 



1.12 

 .53 



4.21 



.12 

 10.93 

 66.10 



.11 



.11 

 .74 

 16 



100 



a Small amount. 



