Annual medical and sanitary report / Falkland Islands.
- Falkland Islands. Senior Medical Officer's Office.
- Date:
- [1931]
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Annual medical and sanitary report / Falkland Islands. Source: Wellcome Collection.
15/20 page 11
![ANALYSIS OF STANLEY WATER. From Messrs. Riley Harbord <3f Lane. To The Crown Agents for the Colonies. Date 12th January, 1925. Port Stanley, Falkland Islands. The following are the results of our analysis of the sample of water received from you on the 31st December marked “Sample of Water from Mount William Stone Run”. Grains per gallon. Total Solids at 240°F 10.1 „ ,, after ignition 6.4 Analysis of Solids. Silica 0.19 Oxide of iron & alumina 0.32 Lime 0.48] fSodium Chloride 4.35 Magnesia 0.52 6 Potassium Sulphate 0.39 Sulphuric Acid 1.66 i Calcium Sulphate 1.17 Chlorine 3.21 g. Magnesium „ 0.60 Sodium 1.71 HH ^Magnesium Chloride 0.75 Potash 0.20j Free Ammonia 0.0182 Albuminoid Ammonia 0.0266 Equivalent to Free Ammonia parts per million or milligrams per litre 0.26 Albuminoid Ammonia ,, „ ,, „ „ ,, 0.48 Degree of Hardness 2j This is a very pure sample of water, the solid matter in solution being very low. The undesirable feature is the quantity of ammonia which indicates contamination by organic matter. It is impossible to indicate the derivation of this organic matter without knowing something of the conditions under which it had been collected and stored. Note. The sample of water referred to was sent to England before the gathering- ground was fenced off and before any filtering medium was used. The organic contamination indicated by the high Ammonia content was found to be due to carcasses of dead sheep, an accident which has been precluded from repetition through fencing. Since then a sample has been analysed in Capetown through the courtesy of the scientists of the R.R.S. “Discovery” and the water was reported to be of a very pure quality.](https://iiif.wellcomecollection.org/image/b31481930_0015.jp2/full/800%2C/0/default.jpg)
