On Saltwaters of Alleghany and Kesheminetas Valleys. 53 



Caustic potash and oxalate of ammoi 

 in the solution ; but phosphate of sodi 

 white turbidness. 



The very small quantity of the dry white substance, from the evapor- 

 ating dish of five of those larger trials treated by the blowpipe flame, 

 did not contain the smallest quantity of lithium. 



The change produced by phosphate of soda proceeded from traces of 

 magnesia ; and the red tint which was observed in the alcohol-flame 

 {aa, 17) must therefore have been deceptive. 



[An examination of the mother-liquor from the Salinas by means of 

 the Spectroscope in the Sheflield Laboratory failed to detect the least 

 traces of the new metals caesium and rubidium. — Eds.l 



The preceding preliminary trials show the saltwater to con- 

 tain :— 



Potassa, Lime, . Chlorine, 



Magnesia, 



Bromint 



Alumina, 



Iodine, 



Protoxyd of iron, 



Carboni 



Baryta, Protoxyd of iron. Carbonic acid, 



Strontia, Protoxyd of manganese. Silicic acid. 



Sulphuric, nitric, phosphoric and boracic acid, organic sub- 

 stances, fluorine, and sulphur, are absent from the brine. 



In reference to the bromine contained in the brine, it maj be 

 observed that it is combined with magnesium, as the experiment 

 ifl a, 12) proved satisfactorj. And in the examination of iodine, 

 i combine it with calcium. 



A perfectly neutral iodid of calcium gives a clear and colorless 

 aqueous solution ; the same is the case with the iodid of mag- 

 nesium. 



The iodid of calcium is partly decomposed at a temperature 

 of from 120 to 160° C. The refuse, of course, shows an alka- 

 hne reaction ; if the turbid liquid is filtered, the solution evap- 

 orated, and the inspissated mass heated in a crucible, then the 

 decomposition continued at a temperature increased by degrees 

 from 150 to 160° C. expelling iodine, leaving the lime in the 

 crucible, which still contains some iodine. By repeating this 

 operation six or seven times, the combination of iodine and cal- 

 cium can be entirely discharged. 



The iodid of magnesium treated in the same manner is also 

 decomposed, like the iodid of calcium, but the complete decom- 

 position of the combination of magnesium takes place at a much 

 iower temperature, and even in the Sd and 4th operation. 

 B. Results of the quantitive analysis. 

 1. Total quantity of the tolid constituents. 



From 113-40 grammes of brine 5-5 grammes solid matter was 

 obtained, dried at 100° C. temperature =4-85 percent, that is, 



" 4.%-lT' " °"¥72-48~grai£r"*" 



