MINERAL SPHJ^Nf.; AT RIETFUNTEIN. 585 



Aliniilniitiii Oxide. — It is customary to calculate the alumi- 

 nium as oxide. 



100,000 c.c. of water contain o. ihio of a o^ram of aUuninium 

 oxide. 



Magiwsittiii Chloride. — TVie mai;nesiuni in nn'neral waters is 

 usually calculated as sulj)hate or chloride, sometimes as carbon- 

 ate. In view of the fact that the total amount of S( )^ is less than 

 would be required l)y the magnesiiun alone if regarded as sul- 

 phate, the magnesium has been estimated as chloride. 



100,000 c.c. of AN'ater contain 0.0794 *^*^' '^ gram (if magne- 

 sium, corresponding to 0.31094 of a gram of magnesium chloride, 

 and contining o.-?3i54 of a gram of chlorine. 



Sodium Nitrate. — 0.03.8013 of a gram of NO, requires 

 O.01410 of a gram of sodiuni. and furms 0.05211 of a gram of 

 sodium nitrate. 



Calcimu Chloride. — kxi.ooo c.c. of water contain 9.34235 

 grams of calcium, of which 0.5208 of a gram is required for the 

 formation of bicarbonate, and 0.07357 for the formation of sul- 

 phate. The remaining 8.74798 grams of calcium correspond to 

 15.47535 grams of chlorine ijiving 24.227,23 grams of calcium 

 chloride. 



LitJiiiiiii Chloride. — The 0.06927 of a gram of litliium con- 

 tained in 100,000 c.c. of water form 0.42018 of a gram of lithium 

 chloride, requiring 0.35091 of a gram of chlorine. 



Sodium Chloride. — ( 1 1 Estimated from the amount of 

 chlorine : Total chlorine, 130.4578 grams, of which are required 

 for the formation of lithium chloride. 0.35091 ; for the forma- 

 tion of calcium chloride, 15.47535; for the formation of mag- 

 nesium chloride 0.23154. The remaining 114.4000 grams of 

 chlorine correspond to 74.2019 grams of sodium, and form 

 188.6019 grams of sodium chloride. 



To the weight of sodium found above must be added tliat 

 present as nitrate, namel\ . 1:1.01410 gram, giving a total of 

 74.2160 grams of sodium. 



(2) Calculated from tlie amount of sodiuni that has been 

 directly determined — 189. 561 1 grams of sodium chloride. Mean 

 value, 1S9.0815 grams of <odiinn chloride per 100,000 c.c. of 

 water. 



Dissi iLVKD Gases. 



Carbon Dio.vide. — Determined bv adding a measured volume 

 N ' 



of — Ikirium hydrate solutiim, and titrating back the excess. 

 10 

 It was found that 208 c.c. of the water required for preri- 



N 

 pitation of the total carl)on dioxitle f . 58 c.c. of ■ — barium 



10 N 



hydrate. 1,000 c.c. of waur therefi^-e require 7.60 c.c. of — 



10 



