Experiment III.-The same experiment was repeated with saline water of the well that had been boiled, but no such effect took place. Experiment IV.-One cubic inch of concentrated sulphuric acid, mingled with six cubic inches of the saline water, occasioned a copious disengagement of air-bubbles, and a slight turbidness ensued. Experiment V.-To 130 cubic inches of the water introduced into a tubulated retort, the neck of which terminated under a wine-glass filled with strontia water, and standing inverted in the same fluid, were added 36 cubic inches of sulphuric acid. A disengagement of air-bubbles took place, which rendered the strontia water turbid. The cloudiness disappeared by the admixture of muriatic acid. Experiment VI.-Six cubic inches of fresh prepared limewater, mingled at the fountain head with ten of the saline water, formed a cloudy mixture, which again was rendered transparent by a few drops of nitric acid. Experiment VII.-Papers slightly stained with carmine, with an infusion of rhubarb, and with turmeric, suffered no change when immersed in the water of this well. Experiment VIII.-Two grains of crystallized hydrate of strontia, dropt into three cubic inches of the saline water, produced an abundant precipitate, both in the water taken fresh from the well, and in such as had been previously concentrated by boiling. Muriatic acid did not redissolve the precipitate. Experiment IX.-Concentrated nitric acid, and muriatic acid, did not produce a change when added either to the fresh or to the boiled water. Experiment X.-Two grains of oxalic acid, dissolved in one cubic inch of water, either fresh, or concentrated by boiling, occasioned a considerable turbidness: the same effect took place, when five grains of oxalic acid were added to three cubic inches of water previously mingled with two grains of potash. Experiment XI.-Fluate of soda and oxalate of ammonia produced a copious precipitate, both in the fresh water and such as had been concentrated by evaporation. Experiment XII.-One cubic inch of a solution of fresh prepared green sulphate of iron, obtained (according to Davy) by boiling sulphuret of iron in dilute sulphuric acid, when added to 12 cubic inches of water kept in a corked phial, exhibited the following properties : 1. In 6 hours the mixture acquired an opal colour. 2. In 12, it was sensibly turbid. 3. In 24, a coloured precipitate ensued. 4. In 36, it became again transparent, having deposited a yellowish brown precipitate. Experiment XIII.-200 grains of fresh prepared white prussiate of iron, (not dried, but still wet,) on being diffused through 20 cubic inches of water at the fountain head, acquired a blue colour after having been kept in a closed phial for 24 hours. Water that had been previously boiled, changed the colour of the white prussiate very slightly. Experiment XIV.-Silver leaf, gold leaf, and copper leaf, did not lose their lustre on being immersed in the water. Experiment XV.-Two grains of nitrate of silver, dissolved in five cubic inches of the water, either fresh from the pump or concentrated by boiling, produced a copious white precipitate, which retained its colour in the dark: the same effect took place with water previously mingled with a few drops of nitric acid. Experiment XVI.-Two grains of sulphate of silver occasioned a dense cloud in two cubic inches of fresh, or in a like quantity of boiled water: nitric acid did not restore its transparency. Experiment XVII.-Five cubic inches of liquid ammonia, added to 15 of water highly concentrated by boiling, effected much turbidness after suffering the mixture to stand for 24 hours. Experiment XVIII.—Seven grains of muriate of barytes dropt into six cubic inches of the saline water, produced an abundant precipitate, which was insoluble in muriatic acid: the same effect ensued when nitric or muriatic acid had been previously added to the water. Experiment XIX.-Ten drops of acetate of barytes rendered two cubic inches of the saline water turbid. Experiment Experiment XX.-The water which had been acted on by acetate of barytes in the preceding process, after having been filtered, became strongly milky on letting fall into it a few drops of acetate of silver: the precipitate was soluble in liquid ammonia. Experiment XXI.-Acetate and nitrate of lead, added in the proportion of one grain to the cubic inch of the saline water, occasioned a white cloud. Experiment XXII.-Five grains of phosphate of soda produced no change in two cubic inches of water highly concentrated; but an abundant precipitate ensued when one cubic inch of a neutral solution of carbonate of ammonia was added. Experiment XXIII.-One cubic inch of fresh prepared solution of hydro-sulphuret of strontia, agitated with ten of water highly concentrated, instantly occasioned much precipitate. Experiment XXIV.—Twelve grains of crystallized acetate of lime effected no change in four cubic inches of saline water. If the same quantity of nitrate of lime was added to three cubic inches of the water concentrated by boiling, a copious white powder fell down. Experiment XXV.-Five cubic inches of alcohol, mingled with ten of strongly concentrated saline water, occasioned an abundant crystalline precipitate. Experiment XXVI. Four grains of arseniate of potash, dissolved in four cubic inches of the water, produced no change after having been suffered to stand 24 hours. Experiment XXVII.—Five grains of crystallized potash rendered three cubic inches of the water turbid; a flocculent precipitate floated on the surface, after suffering the mixture to stand, undisturbed for six hours. Experiment XXVIII.-Tincture of galls, either prepared with or without alcohol, produced no sensible change, whether in the fresh or boiled water; but if to one cubic inch of water, concentrated by evaporation, three grains of oxymuriate of potash and six of nitrous acid were added, tinc-, ture of galls and succinate of soda then produced a darkcoloured precipitate. Experiment XXIX.-Neither prussiate of potash nor prussiate of lime produced any change when added to the water; but when a few grains of nitrous acid and oxy-muriate of potash were previously dissolved in it, a blue precipitate was then obtained. From these preliminary observations we are led to believe, that this water contains carbonic acid, oxygen gas, salts with a base of lime, salts with a base of magnesia, with oxide of iron, with sulphuric acid, with muriatic acid, &c. EXAMINATION OF THE GASEOUS CONTENts of the WATER. 924 cubic inches of the saline water, fresh taken from the spring, were introduced into a retort connected with the mercurial trough. The water was made to boil, and the gaseous products collected over mercury. After the apparatus had again acquired the temperature which prevailed at the commencement of the operation, it was found, by the addition of barytic water, that 48.28 cubic inches of carbonic acid gas had been disengaged, of which 127, therefore, are contained in one gallon of water. The residuary gaseous fluids, on being examined by the test of phosphorus and by the action of hydrosulphuret of lime, were found to be composed of 4.84 parts of atmospheric air and 16.12 parts of oxygen gas. Hence the gaseous contents of one gallon of the saline water are : Experiment I.-924 cubic inches of the saline water being evaporated in a glass retort to eight cubic inches, were reduced to dryness in a glass bason at a temperature of 224° Fahr. The mass was of a brilliant white colour; it tasted strongly saline and bitter. Its weight amounted to 2296 grains, grains, which, divided by four, gives 574 grains of solid matter for every gallon of the water*. Experiment II.—This product, being levigated with alcohol, was digested in that fluid in the cold for six days. The solution was decanted, fresh portions of alcohol were added, and the operation repeated successively. The insoluble residue was laid aside for further examination. Experiment III.-The alcoholic solutions being minglea with a small quantity of water, were rendered turbid by acetate of ammonia and sulphate of silver; phosphate of soda employed (according to Wollaston) in combination with carbonate of ammonia, produced much cloudiness. Experiment IV.-The mass which was not soluble in alcohol (Experiment II.) was digested in eight times its own weight of distilled water, suffered to boil, and filtered. Experiment V.-The insoluble residue of the preceding process was boiled in 60 times its quantity of water; but as no complete solution could be effected, it was filtered, and the insoluble part collected. - Experiment VI. This insoluble powder, which resisted the action of boiling water, being dried, was covered with muriatic acid, which speedily effected a solution. The fluid was decomposable by gallic acid, and by succinate of ammonia it was evaporated to dryness; over the dry mass, nitrous acid was abstracted repeatedly, and lastly the whole was re-dissolved in muriatic acid. Experiment VII.-The obtained muriatic solution, being concentrated to the consistence of oil, was mingled with liquid ammonia until it ceased to produce a precipitate. The oxide of iron thus obtained weighed 19 grains, which indicated 7.15 carbonate of iron in each gallon of the water. Experiment VIII.-The alcoholic solution (Experiment II.) being suffered to stand exposed to the air in an open vessel for six days, was covered with a multitude of crystals; it was evaporated till no more salt appeared, and then suffered If the same bulk of water was evaporated in a glazed bason of Wedge. wood-ware, the product was seven per cent. less. to |