80 ABSTRACTS OF CHEMICAL PAPERS. M i n e r a1 o g i c a1 C h e mi s t r y. Analysis of the Mineral Water of Niederbronn in Unter- Elsass. By E. BURI (J.yr. Chem. [2], 22, 388--395).-The water as it runs into a large basin from the spring appears deep green, occasional bubbles of gas escape; it is perfectly clear at first, bub appears turbid when removed. The sample was collected on 5th June, 1880 ; its temperature then was 17*9", that of the air being ll*6°. Its sp. gr. a t 16.4" was 1.0036, taste saline and somewhat inky ; no smell was noticeable. With test- paper the reaction for carbonic acid was given. In 10,000 parts by weight, of t.he water there were contained:- Strontium sulphate ........ Calcium sulphate ........ Potassium chloride ........ Sodium chloride .......... Lithium chloride ..........Amnionium chloride ...... Calciiim chloride .......... Magnesium chloride ...... Calcium bicarbonate ...... Magnesium bicarbonate .... Ferrous bicarbonate. ....... Silica. ................... 0250 0.697 2.187 30.748 0.274 0.088 6.621 2-456 3.900 0.049 0.104 0.135 47.509 Free carbonic anhydride.. .. 0.794 Nitrogen ................ 0.328 There were also present traces of phosphoric acid, bromine, man- ganese, alumina, and organic matter. The bubbles of gas rising from the water in the basin contained 5-34 per cent. of carbonic anhydride and 94.65 per cent. of nitrogen by volume. The mud collected from the sides of the basin into which the water flowed was thoroughly washed and then dried. It contained the fol- lowing percentages :-1*533 of arsenious acid, 0.005 of lead sulphate, and 55.534 of ferric oxide, together with traces of antimony, copper, zinc, and manganese.Supposing the arsenious acid to bear the same proportion to the ferric oxide in the water as it does in the mud, 10,000 parks of the water would contain 0.0013 part of arsenious acid.MINERALOGICAL CHEBIISTRY. 81 The analysis was conducted according to Bunsen’s method, and the actual weights of the precipitates obtained are given : the arsenic Wacs The Hot Spring.at Bagnoles de I’Orne, and the Deposits Formed in the Conduits. By DELACHANAL ( A m . Chi~n. Phys. [ 5 ] , estimated by Bunsen’s new method as pentasulphide. P. c. 21, 275-278). A m l y s i s of the Water (per litre). 0.0182 0.0040 0,0151 0.0127 0.0035 0.0003 0*00lt Si02.K,S04. Na,S04. NaC1. CsSO+ Ca,P,O,. 8 1 2 0 3 + Fe203. The total residue per litre was 0.0628, the organic matter and loss being 0.0073. There were traces of lithium, magnesium, zinc, and lead present. The water had a perfectly neutral reaction; iodine and arsenic could not be detected. The numbers obtained by the author differ from those obtained by Henry in 1868, the total solid residue a t that time, for example, being 0.1309 per litre. The composition of the water has evidently changed. Analysis of Deposit. Si02. PbO. ZnO. Fe,O,. P?05. SiiO,. 10.7 14.1 1.3 53.3 17.6 2.3 = 99.3 C. H. B. Results of the Norwegian North Sea Expedition. By L. SCHMELCK) J. pr. Chem. [2], 22, 165-188).-1. Solid constituents of sea-water. The Northern Arctic Ocean has a mean sp.gr. of 1.0265, and con- tains per cent.- CaO. MgO. K20. c1. so,. 0.05 78 0.2203 0.047% 1.9320 0.2214. The average amounts of salts occurring in the sea and the composi- tion of the sea-salt are :- I n sea-water. In sea-salt. per cent. per cent. Calcium cnrbonnt e .......... 0.0 02 0 0.05 7 Calcium sulphate .......... 0.1395 4.00 Magnesium sulphnte ........ 0.2070 5.93 Magnesium chloride ........ 0.3562 10.20 Potassium chloride. ......... 0.0747 2.14 Hydrogen sodium carbonate. . 0.0166 0.476 Sodium chloride ............ 2.682 76-86 F. L. T.80 ABSTRACTS OF CHEMICAL PAPERS.M i n e r a1 o g i c a1 C h e mi s t r y.Analysis of the Mineral Water of Niederbronn in Unter-Elsass. By E. BURI (J.yr. Chem. [2], 22, 388--395).-The wateras it runs into a large basin from the spring appears deep green,occasional bubbles of gas escape; it is perfectly clear at first, bubappears turbid when removed.The sample was collected on 5th June, 1880 ; its temperature thenwas 17*9", that of the air being ll*6°.Its sp. gr. a t 16.4" was 1.0036,taste saline and somewhat inky ; no smell was noticeable. With test-paper the reaction for carbonic acid was given.In 10,000 parts by weight, of t.he water there were contained:-Strontium sulphate ........Calcium sulphate ........Potassium chloride ........Sodium chloride ..........Lithium chloride ..........Amnionium chloride ......Calciiim chloride ..........Magnesium chloride ......Calcium bicarbonate ......Magnesium bicarbonate ....Ferrous bicarbonate........Silica. ...................02500.6972.18730.7480.2740.0886.6212-4563.9000.0490.1040.13547.509Free carbonic anhydride.. .. 0.794Nitrogen ................ 0.328There were also present traces of phosphoric acid, bromine, man-ganese, alumina, and organic matter.The bubbles of gas rising from the water in the basin contained5-34 per cent. of carbonic anhydride and 94.65 per cent. of nitrogenby volume.The mud collected from the sides of the basin into which the waterflowed was thoroughly washed and then dried. It contained the fol-lowing percentages :-1*533 of arsenious acid, 0.005 of lead sulphate,and 55.534 of ferric oxide, together with traces of antimony, copper,zinc, and manganese. Supposing the arsenious acid to bear the sameproportion to the ferric oxide in the water as it does in the mud,10,000 parks of the water would contain 0.0013 part of arseniousacidMINERALOGICAL CHEBIISTRY.81The analysis was conducted according to Bunsen’s method, and theactual weights of the precipitates obtained are given : the arsenic WacsThe Hot Spring.at Bagnoles de I’Orne, and the DepositsFormed in the Conduits. By DELACHANAL ( A m . Chi~n. Phys. [ 5 ] ,estimated by Bunsen’s new method as pentasulphide. P. c.21, 275-278).A m l y s i s of the Water (per litre).0.0182 0.0040 0,0151 0.0127 0.0035 0.0003 0*00ltSi02. K,S04. Na,S04. NaC1. CsSO+ Ca,P,O,. 8 1 2 0 3 + Fe203.The total residue per litre was 0.0628, the organic matter and lossbeing 0.0073. There were traces of lithium, magnesium, zinc, andlead present.The water had a perfectly neutral reaction; iodine and arseniccould not be detected.The numbers obtained by the author differfrom those obtained by Henry in 1868, the total solid residue a t thattime, for example, being 0.1309 per litre. The composition of thewater has evidently changed.Analysis of Deposit.Si02. PbO. ZnO. Fe,O,. P?05. SiiO,.10.7 14.1 1.3 53.3 17.6 2.3 = 99.3C. H. B.Results of the Norwegian North Sea Expedition. By L.SCHMELCK) J. pr. Chem. [2], 22, 165-188).-1. Solid constituents ofsea-water.The Northern Arctic Ocean has a mean sp. gr. of 1.0265, and con-tains per cent.-CaO. MgO. K20. c1. so,.0.05 78 0.2203 0.047% 1.9320 0.2214.The average amounts of salts occurring in the sea and the composi-tion of the sea-salt are :-I n sea-water. In sea-salt.per cent. per cent.Calcium cnrbonnt e .......... 0.0 02 0 0.05 7Calcium sulphate .......... 0.1395 4.00Magnesium sulphnte ........ 0.2070 5.93Magnesium chloride ........ 0.3562 10.20Potassium chloride. ......... 0.0747 2.14Hydrogen sodium carbonate. . 0.0166 0.476Sodium chloride ............ 2.682 76-86F. L. T