64 



HOT SPRINGS, ARKANSAS. 



No. 33. — Lamar spring. 



[Situated on side of Hot Springs Mountain. Sample for mineral analysis taken May 19. 1901. Tem- 

 perature on December 18, 1900, was 48.3° C, and January 8, 1901, was 49.2° C] 



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

 Nitrogen, 9.84; oxygen, 2.82; carbon dioxide (free), 6.36; carbon dioxide (set free 

 from bicarbonates on evaporating to dryness), 31.15; hydrogen sulphide, none. 



Formula aud name. 



Si0 2 (silica) 



S0 4 " (sulphuric acid radicle). . . 

 HCO3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) '. 



N0 2 (nitrous acidradicle) 



PO4 (phosphoric acid radicle) . 

 BOo (metaboric acid radicle).. 



As0 4 (arsenic acid radicle) 



CI (chlorine) 



Br (bromine) 



I (iodine) 



4 ?M iron and aluminum) 



Mn (manganese) 



Ca ( calcium) 



Mg (magnesium) 



K (potassium ) 



Na (sodium) 



Li (lithium) 



NH (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. 



49.60 

 8.53 

 165. 00 

 Trace. 

 .0013 

 Trace. 



( a ) 



None. 



2.50 



Trace. 



Trace. 



.22 



.15 

 45.94 

 4.80 

 1.68 

 4.65 

 Trace. 

 .042 



' 17.52 



3.01 



58.29 



c c. 



8,000 



4,000 



100 



100 





100 





2,000 

 3,000 

 3,000 

 600 

 5,400 

 5,400 



7,500 



7, 500 

 2,000 

 2,000 

 4,000 

 4,000 

 4,000 

 500 







.88 





.08 



.05 



16.23 



1.70 



.59 



1.64 



.01 



283. 1133 



100 







202. 50 

 .022 

 .65 





200 





500 





200 



» 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.iS0 4 (sodium sulphate) 



Mg~S0 4 (magnesium sulphate) 



NaBOo (sodium metaborate) 



Ca 3 (P0 4 ) 2 (calcium phosphate) 



NaN0 3 (sodium nitrate ) 



NaNOo (sodium nitrite) 



Mg(HC0 3 ) 2 (magnesium bicarbonate) . 



Ca(HC0 3 )o"( calcium bicarbonate) 



Fe(HC0 3 ) 2 (ferrous bicarbonate) 



Mn(HC0 3 ) 2 (manganous bicarbonate). 

 Si0 2 (silica) 



0.125 

 Trace. 



3.20 



1.48 



Trace. 



Trace. 



12. 55 



.06 



(•) 



Trace. 



Trace. 

 .0019 



28.84 



1S6. 08 



.70 



.48 



49.60 



0.04 



1.13 

 .52 



4.43 

 .02 



10.19 



65.73 



.25 



.17 



17.52 



Total. 



283. 1169 



100 



a Small amount. 





