60 



HOT SPRINGS, ARKANSAS. 



No. 29. — Dripping spring. 



[Situated at base of Hut Springs Mountain. Flows from side of cliff, 

 taken May 19, 1901. Temperature on December 13, 1900, was 57.1° C, 

 57.8° C.l 



Sample for mineral analysis 

 iikI on January 8, 1901, was 



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

 Nitrogen, 8.18; oxygen, 3.93; carbon dioxide (free), 3.86; carbon dioxide (set free 

 from bicarbonates on evaporating to dryness), 30.28; hydrogen sulphide, none. 



Formula and name. 



Si0 2 (silica) 



S0 4 (sulphuric acid radicle) . . . 



HCO3 (bicarbonic acid radicle) 



N0 3 (nitric acid radicle) 



NOo (nitrous acid radicle) 



PO4 (phosphoric acid radicle) . 



B0 2 (metaboric acid radicle). . 



ASO4 (arsenic acid radicle) 



CI ( chlorine) 



Br (bromine) 



I (iodine) 



Fel 



. ]f (iron and aluminum) 



M11 (manganese) 



Ca (calcium) 



Mg (magnesium) 



K (potassium) 



Na (sodium) 



Li (lithium) 



NH 4 (ammonium) 



Total 



Total solids 



Albuminoid ammonia 



Oxygen required 



Parts per 

 million. 



48.02 



7.64 



165. 00 



.22 



. 0003 

 .80 



(a) • 



None. 

 2.58 

 Trace. 

 Trace. 



.22 



Trace. 

 45.97 

 4.80 

 1.67 

 5.09 

 Trace. 

 .010 



282. 0203 



196. 50 

 None. 

 .25 



Per cent of 

 total 



inorganic 

 material in 



solution. 



17.03 



2.71 



58.52 



.08 



.28 



.91 



16.30 



1.70 



.59 



1.80 



100 



Amount of 



water used 



for each 

 determina- 

 tion. 



8,000 



4,000 



100 



100 



100 



2,000 



3,000 



3,000 



600 



5, 400 



6,400 



7,500 



7,500 

 2, 000 

 2,000 

 4,000 

 4,000 

 4,000 

 500 



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) 



Nad (sodium chloride) 



KBr (potassium bromide) 



KI (potassium iodide) 



Na. 2 S04 (sodium sulphate) 



NaBOo (sodium metaborate) 



Ca 3 (P0 4 )o (calcium phosphate) 



NaN0 3 (sodium nitrate) 



NaNO L . (sodium nitrite) 



Na(HC0 3 ) (sodium bicarbonate) '. 



Mg(HC0 3 ) 2 magnesium bicarbonate). 



Ca(HC0 3 ) 2 (calcium bicarbonate) 



Fe(HC0 3 ) 2 (ferrous bicarbonate) 



Mn(HC0 3 ) 2 (manganous bicarbonate) 

 SiO-2 (silica) 



Total 



0.030 

 Trace. 



3.18 



1.73 

 Trace. 

 Trace. 

 11.30 



( a ) 

 1.31 

 .30 

 .0005 

 2.44 

 28.90 

 184.11 

 .70 

 Trace. 

 48.02 



282. 0205 



0.01 



1.13 

 .61 



4.01 



.46 

 .11 



.86 

 10. 25 

 65. 28 



.25 



17.03 



100 



» Small amount. 



