W. R. Jones — Supposed Occurrence of Tin in Springs. 539 

 Analyses of Waters. 



Ayer Panas, 



Jasin, 



Malacca. 



Dr. Bott. 



Total solids in water (in grains \ 



per gallon) 18-40 



Hardness 

 Chlorine . 

 Free ammonia 



parts) . 

 Albuminoid ammonia 



million parts) 



(per million 



(per 



2-50 

 0-70 



0-05 



05 



Ayer Panas, 

 Alor Gajah, 



Malacca. 



Dr. Bott. 



1-7 

 2-5 

 0-5 



0-04 



0-05 



DusunTua. 

 Dr. Bott. 



15-4 

 2-3 

 0-25 



0-04 



003 



Great 



Geyser 



of 



Iceland.! 



Constituents dissolved in 10,000 parts of water. 



Calcium carbonate 

 Calcium sulphate . 

 Magnesium sulphate . 

 Sodium sulphate . 

 Potassium sulphate . 

 Sodium carbonate. 

 Ammonium carbonate 

 Sodium chloride . 

 Potassium chloride . 

 Lithium chloride . 

 Sodium sulphide . 

 Hydrogen sulphide 

 Carbon acid .... 



Nitrogen 



Silica 



Organic matter 

 Boric acid .... 

 Potassium iodide . 



160 



180 



015 



190 



085 



450 



00018 



095 



006 



200 

 025 

 585 

 085 

 780 

 250 



0-200 



0-140 



0-025 



0-150 



0-950 



0-550 



0-00015 



0-075 



0-005 



trace 



0-019 



0-020 



0-480 



0-075 



0-590 



0-295 



0-1357 



0-11400 



0-01200 



0-09900 



0-06300 



0-0800 



0-00053 



0-05100 



0-00400 



trace 

 0-00900 

 0-03200 

 0-92000 

 0-07000 

 0-61200 

 0-04031 



trace 



0-042 



1-07 



0-475 



1-939 



0-083 



2-521 



0-088 

 0-557 

 5-097 



No trace of tin was found by Dr. Bott, and recent tests carried out 

 by Mr. C. Salter, Chemist to the Geological Department F.M.S., and 

 the writer have failed to give any traces of tin in solution in these 

 waters. It is to be noted that Meunier is not quoted by Dr. Bott as 

 having found tin in solution in the water, but seems to have based his 

 conclusion that tin was in statu nascenti solely on the result of the 

 analysis of the mineral specimen which he described as "a kind of 

 opal similar to geyserite . . ." The deposition of tin oxide from 

 water containing sulphuretted hydrogen is, as Dr. Bott points out, 

 a chemical impossibility. 



Careful search in the neighbourhood of these hot springs has failed 

 to prove the presence of any such mineral deposit, and when it is 

 considered that these hot waters contain less than one part in 10,000 

 of silica, that they contain other metals in solution, and that they 

 commingle with surface-waters near their outlets, it would be 

 astonishing to find them depositing a mineral having 91-8 per cent of 

 silica and no other metal besides tin-ore and iron. The composition 



^ Ann. Chem. Pharvi., 1847, p. 49, quoted by Geikie in Textbook of Geology, 

 vol. i, p. 317. 



