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P. got himself analysed that day by Dr. ALLEN, and he was found to consist principally of carbonate of Lime; Silicate of Potassa; Iodide of Magnesia; and Chloride of Sodium; with a strong trace of Sulphate of Strontia. At night, however, he was able to attend the hop in the grand saloon. For a time Mr. P. danced with one girl right along.

Tremolite or grammatite of HAUeY, in the same place. These two last-mentioned substances were in terminated crystals. Red oxyd of titanium, in the same place. Crystallized sulphate of strontia, in the mines of Villefort in La Lozere, in the environs of Paris, at Bartelemont, near the Salterns in the department of La Meurthe. Fibrous and crystallized sulphate of strontia, at Bouvron, near Toul.

These compounds are similar, because the atoms of which they are composed are arranged in the same manner. The converse of this is also true: nitrate of strontia becomes quite dissimilar to its common state if a certain proportion of water is taken into its composition.

The powder hissed and fizzed, and sent out blue and green sparks, and the smoke rose till you could neither see, nor breathe, nor gasp. Mellish, however, was used to it. 'Nitrate of strontia, he shouted; 'baryta, bone-meal, etcetera! Thousand cubic feet smoke per cubic inch. Not a germ could live not a germ, Y' Excellency!

The Sulphates in the cases include glauber salt, or sulphate of soda; heavy spar or sulphates of baryta, among which are some splendid crystallisations from Piedmont, Hungary, Spain, and other countries; sulphate of strontia, known also as celestine, among which are some delicate blue crystals from Sicily; sulphates of lime, as gypsum, including some fine specimens of alabaster, and the fibrous sulphate known vulgarly as tripe-stone.

The powder then hissed and fizzed, and sent out blue and green sparks, and the smoke rose till you could neither see, nor breathe, nor gasp. Mellish, however, was used to it. "Nitrate of strontia," he shouted; "baryta, bone-meal, etcetera! Thousand cubic feet smoke per cubic inch. Not a germ could live not a germ, Y' Excellency!"

Carbonates of strontia and of baryt, obtained by a new process, will shortly be sold in Paris at 3 francs the kilogramme. This discovery is expected to have a great influence on several important arts, such as the manufacture of glass, of soap, &c. Articles of furniture, jewellery, and every branch dependent on design, are now remarkable for a purer taste than that which they formerly exhibited.

The red composition used for making red flambeaux and percussion signals consists of 1,800 parts of chlorate of potash, 300 of oxalate of strontia, 300 of carbonate of strontia, 48 of whitewood charcoal, 240 of boiled oil, 6 of oil, and 14 of gum lac. A red or white Lamarre flambeau consists of a sheet rubber tube filled with one of the above-named compositions.

Earthy sulphate of strontia, in the vicinity of Paris, near the forest of Montmorency, and to the north-east of it. Onyx-agate-quartz, at Champigny, in the department of La Seine. Avanturine-quartz, in the Deux-Sevres. Marine bodies, imbedded in the soil, a little above the Oule de Gavernie. Anthracite, and its direction determined in several departments.

In the third case are some remarkable varieties of silicates, which contain borates from Norway and other countries; and in the fourth case are the first in order, of the carbonates, including carbonates of soda, the beautiful crystals of carbonate of baryta, carbonate of strontia and aragonites, from Aragon, Hungary, Bohemia, and Vesuvius; and in the next case are deposited further varieties of aragonite, and some remarkable varieties of calcite, or carbonate of lime.