HOT SPRINGS, ARKANSAS. 



33 



No. 2. — Arsenic spring. 



[Situated at base of Hot Springs Mountain, under wall of Arlington Hotel. Sample for mineral 

 "analysis taken January 9, 1901. Temperature on November 8, 1900, was 51.9° C, and January 8, 

 1901, 'was 53.9° C. This spring could not be reached, so the temperature was taken about 35 feet 

 from the spring.] 



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

 Nitrogen, 7.97; oxygen, 3.34; carbon dioxide (free), 9.15; carbon dioxide (set free 

 from bicarbonates on evaporating to dryness), 29.48; hydrogen sulphide, none. 



Formula and name. 



SiOo (silica) 



SO4 (sulphuric acid radicle) 



HCO3 (bicarbonic acid radicle) 



X0 3 (nitric acid radicle) 



NO* (nitrous acid radicle) 



PO4 (phosphoric acid radicle).. 

 BOo (metaboric acid radicle)... 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



■yH (iron and aluminum) 



Mn (manganese) 



Ca (calcium) 



Mg (magnesium) 



K (potassium) 



Na (sodium) 



Li (lithium) 



NH 4 (ammonium) 



Parts per 

 million. 



Total 



Total solids 



Albuminoid ammonia. 

 Oxygen required 



44.48 



8.24 



160. 50 



.44 



Trace. 



Trace. 



(a) 



None. 



2.50 



Trace. 



Trace. 



.24 



Trace. 



44.64 

 4.77 

 1.98 

 4.46 



Trace. 

 .060 



272. 310 



198. 50 

 .001 

 .25 



Per cent of 

 total 



inorganic 

 material in 



solution. 



16.34 

 3.03 



58.95 

 .17 



.92 



.09 



16.40 



1.70 



.74 



1.64 



'"."62 



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. 



Formula and name. 



XH 4 C1 (ammonium chloride) 



LiCl (lithium chloride) 



KC1 (potassium chloride) 



NaCI (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Xa.iSOj C sodium sulphate) 



MgS0 4 (magnesium sulphate) 



XaBOj (sodium meta borate) 



Ch.jI pi ) 4 10 (calcium phosphate) 



XaXO :) ( sodium nitrate) 



NaNO.i (sodium nitrite) 



Mgi HCO.;,i. 2 (magnesium bicarbonate) 



Ca HCO g )o (calcium bicarbonate) 



Fe(HCO :! )2 (ferrous bicarbonate) 



Mm HC0 3 j 2 (manganous bicarbonate) 

 SiOo (silica) 



Total 



Parts per 

 million. 



0.178 

 Trace. 

 3.77 

 .97 

 Trace. 

 Trace. 

 12. 09 

 .09 



Trace. 



.60 

 Trace. 

 28.60 

 180. 79 



.76 

 Trace. 

 44.48 



272. 328 



Per cent of 



total 



inorganic 



material in 



solution. 



0.07 



1.38 

 .36 



4.44 

 .03 



.22 



10.50 



66.39 



.28 



16.33 



100 



a Small amount. 



S. Doc. 282- 



