| Sodium chloride | 18.67 |
| Sodium sulphate | 5.63 |
| Sodium carbonate | 2.72 |
| Potassium carbonate | 3.87 |
| Potassium sulphyrate | .04 |
| Silica | .01 |
| Lime and magnesia | traces |
| Water | 68.77 |
| 99.71 |
The difference between the total found and 100 is probably accounted for by small quantities of organic matter.
The density is 1·2702; using this figure, the results, as expressed in grains per litre, are:—
| Sodium chloride | 237·15 | |
| Sodium sulphate | 61·51 | |
| Sodium carbonate | 34·55 | |
| Potassium carbonate | 49·16 | |
| Potassium sulphydrate | ·51 | |
| Silica | ·12 | |
| Total salts per litre | 383·00 | grains. |
When received the sample had an odour of sulphuretted hydrogen, due to the sulphides present, and a slight pink colour, caused by matter in suspension. The quantity of the sample was too small to admit of an examination of this or of the organic matter in the water.
This water, consisting as it does of a nearly saturated solution, is a very remarkable one, and a natural water of this composition is very rarely met with. The presence of sulphides is due to the action of reducing organisms on the sulphates. The bottle in which the sample was was quite full, and securely corked for several months.
| A. Pappe. H. Droop Richmond. | —Les Chémistes. |
“Snow Hill Buildings, London, E.C.
“1st May, 1890.
“Dear Mr. Stanley,—
“The following is the result of the quantitative analysis of the natural crystalline salt you submitted to me:—