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Heath's failure to word his patent so as to cover also his method of producing carburet of manganese led to the effective breakdown of that patent and to the general adoption of his process without payment of license or royalty.

From these facts we are inclined to admit that it is not exclusively by the influence of the solar rays that this carburet of hydrogen is formed in the organs of plants, the presence of which makes the parenchyma appear of a lighter or darker green, according as the carbon predominates in the mixture. Mr.

Nevertheless, Mr. Bessemer is entitled to the merit of working out the idea, and bringing the process to perfection, by his great skill and indomitable perseverance. In the Heath process, carburet of manganese is employed to aid the conversion of iron into steel, while it also confers on the metal the property of welding and working more soundly under the hammer a fact discovered by Mr.

He had spitted several bits on a slender stick, and was roasting them like meat. The dapicho blackens in proportion as it grows soft, and becomes elastic. The resinous and aromatic smell which filled the hut, seemed to indicate that this coloration is the effect of the decomposition of a carburet of hydrogen, and that the carbon appears in proportion as the hydrogen burns at a low heat.

Josiah Marshall Heath's patents of 1839, were the first developments in the direction of cheaper steel, his process leading to a reduction of from 30 to 40 percent in the price of good steel in the Sheffield market. Heath's secret was the addition to the charge of from 1 to 3 percent of carburet of manganese as a deoxidizer.

Add to this, a plan for a double line of submarine railway from Calais to Dover; a statement from M. Gaietta, that the aurora borealis is nothing more than spontaneously inflamed carburet of hydrogen; and a report from a learned anatomist, on the use, instead of the knife in amputation, of a platinum wire heated red-hot by a battery and you may form a notion of the variety of communications that comes before the French savans.

It has been proposed to carburet and enrich poor coal gas by admixture with it of an oxy-oil gas made under Tatham's patents, in which crude oils are cracked at a comparatively low temperature, and are there mixed with from 12 to 24 per cent. of oxygen gas.

The waters of the Lagartero were of a golden yellow by transmitted, and coffee-brown by reflected light. They are no doubt coloured by a carburet of hydrogen. An analogous phenomenon is observed in the dunghill-waters prepared by our gardeners, and in the waters that issue from bogs.

I might terminate these geological sketches by enquiring into the nature of the combustible which has fed for so many thousands of years the fire of the peak of Teneriffe; I might examine whether it be sodium or potassium, the metallic basis of some earth, carburet of hydrogen, or pure sulphur combined with iron, that burns in the volcano; but wishing to limit myself to what may be the object of direct observation, I shall not take upon me to solve a problem for which we have not yet sufficient data.

Principal Mineral Substances discovered in France. Dolomite in the mountains of Vosges and in the Pyrenees. Carburet of iron or plumbago, in the south peak of Bigorre. The same variety has been been found near Argentiere, and the valley of Chamouny, department of Mont-Blanc. A rock of the appearance of porphyry, with a calcareous base, in the same valley of Chamouny.