H.—l3

12

Analysis. Chloride of sodium ... ... ... ... ... 1,303329 Chloride of potassium ... ... ... ... -501 Chloride of magnesium ... ... ... ... 34960 Chloride of calcium ... ... ... ... ... 120885 lodide of magnesium ... ... ... ... ... -582 Bromide of magnesium ... ... ... ... traces Sulphate of lime ... ... ... ... ... 3026 Phosphate of alumina) ( 641 Phosphate of iron ) ( traces Phosphate of lime ... ... ... ... ... -430 Bi-carbonate of lime ... ... ... ... ... 6451 Silica ... ... ... ... ... ... 1-696 lodine, free ... ... ... ... ... 1595 1,474090 [Extract from "Thirteenth Annual Heport on the Colonial Museum and Laboratory," pp. 31, 32.J No. 2024 is a mineral water from Savu Savu, Fiji. It has a decidedly saline taste, and an alkaline reaction, manifest even in the water in its normal state. It is besides quite clear, but a sediment had formed therein which consisted mainly of silica, and amounted to 1047 grains computed upon the gallon. Specific gravity of water is 100802 at 60° Fahr. The following is a statement of the composition of the matter found in it, computed also in grains per gallon : — Analysis. Chloride of sodium ... ... ... ... ... 23831 Chloride of potassium ... ... ... ... ... 75 Chloride of magnesium ... ... ... ... ... 399 Chloride of calcium ... ... ... ... ... 27589 Sulphate of soda ... ... ... ... ... 2P27 Bi-carbonate of soda ... ... ... ... ... 11T3 Bi-carbonate of lime ... ... ... ... ... 619 Silica ... ... ... ... ... ... 11-36 568-89 This water therefore belongs to that class of mineral waters known as the chlorinated. I was unable to detect iodine in this water, but the quantity of it at my disposal was far too small to allow of any exhaustive search being made for it. No. 2034 is another mineral water. It is from Porangahau, and is charged with lime to a great extent. It is clear and tasteless ; reaction faintly alkaline. Analysis. Chloride of sodium ... ... ... ... ... 837 Sulphate of soda ... ... ... ... ... -53 Bi-carbonate of soda ... ... ... ... ... 292 Bi-carbonate of lime ... ... ... ... ... 570 Bi-carbonate of magnesia ... ... ... ... 2-81 Bi-carbonate of iron ... ... ... ... ... traces Silica ... ... ... ... ... ... 1-54 Organic matter ... ... ... ... ... 261 24-48 No. 2073, from Whangarei, is also a mineral water. It belongs to the class known as carbonated, and the sub-class alkaline of it, resembling therefore the mineral water of Alchy, in France, which is largely used medicinally. Analysis. Chloride of sodium ... ... ... ... ... 43 67 Chloride of potassium ... ... ... ... ... traces Sulphate of soda ... ... ... ... ... 163 Bi-carbonate of soda ... ... ... ... ... 5825 Bi-carbonate of lime ... ... ... ... ... 9067 Bi-carbonate of magnesia ... ... ... ... 439 Bi-carbonate of iron ... ... ... ... ... 375 Phosphate of alumina ... ... ... ... ... traces Silica ... ... ... ... ... ... 13-81 21617