Carburetted hydrogen

Thomas Paine referred to this flammable natural gas as carburetted hydrogen. ... 

The gas is therefore hydride of methyl (light carburetted hydrogen), 1 voL of which consumes 2 vols. oxygen and generates 1 vol. carbonic acid, and the specific gravity of which is -5528, numbers which correspond almost exactly with those obtained by experiment. 

The first of these laws was established by Proust in 1799. Dalton himself proved the law of multiple proportions by his researches on olefiant gas and carburetted hydrogen, and on other substances. The third law first became apparent from the neglected work of Richter on the quantitative neutralisation of acids by bases (p. 146). Soon after the publication of the Atomic Theory, the great Swedish chemist, Berzelius, wrote to Dalton saying that the theory of multiple proportions is a mystery without the atomic hypothesis. ... 

Heavy carburetted hydrogen is a combination of 2 equivalents of carbon and 2 of hydrogen ( 4 carbon and 4 hydrogen—Booth ), and bums with a white luminous flame it is a littlo lighter than air. hanng a specific gravity of. 981. It is also called Eihine ... 

To Obtain Light Carburetted Hydrogen. When 2 parts crystallized acetate of soda, 2 parts dry hydrate of potassa, and 3 parts powdered quicklime, are strongly heated in a flask or retort, this gas is abundantly evolved, and may be collected over water. See Ko. 4031.)... 

To Obtain Heavy Carburetted Hydrogen. Heavy carburetted hydrogen is... 

Davy attempted to determine the heat evolved in combustion by burning gases from a platinum jet under a copper dish filled with olive oil containing a thermometer (Dalton s method, Vol. Ill, p. 800). For equal volumes of oxygen consumed he found the ratios hydrogen 26, olefiant gas 9-66, sulphuretted hydrogen 6-66, carburetted hydrogen and carbonic oxide 6. ... 

Alcohol is therefore water in which half the hydrogen is replaced by carburetted hydrogen, and aether is water in which both atoms of hydrogen are replaced by carburetted hydrogen thus. 

Aug. 26, Sunday. Called on Mr. Henry, and found him dined with his father and drank tea in Mr. Henry junior s, in company with Mr. Dalton. Mr. Dalton had been lately occupied with experiments on the carburetted hydrogen. He finds three species. 

Of carburetted hydrogen (methane) obtained from stagnant ponds Dalton says ... 

Dalton remarks that although a mixture of carburetted hydrogen and air in coal mines exhibits some dreadful explosions in the large way yet when mixed with common air, in Volta s eudiometer, it does not explode by a spark, unless the gas be to the air, as i to 10 nearly, and then feebly . 

Carburetted hydrogen gas (methane) is a compound of one atom of charcoal and two of hydrogen the compound atom occupies the same space (nearly) as an atom of hydrogen and 4 atoms of oxygen are necessary for its complete combustion . For Dalton C=5, H = i, methane is CHo, or for C = 12... 

W. Lewis (see Vol. II, p. 762) had found that black-lead when calcined is slowly consumed, leaving a fourteenth part of its weight of rusty brown calx attracted by a magnet (iron oxide), and says the remarkable dissipation. .. of a substance which in close vessels resists intense fires, may be somewhat illustrated by the known property of charcoal he emphasised the need for exposure to air. H. Colquhoun, following up some experiments of Charles Macintosh (B.Pat. 5173/1825) in which rods of iron heated in a stream of carburetted hydrogen (oil gas) were converted into steel, found that filaments of a new form of carbon of metallic appearance and very pure were deposited, and this was probably the first formation of artificial graphite. 

The symbols used by Dalton follow. In 1825 Thomson said Unless my recollection fails me, Mr. Dalton s theory was originally deduced from his experiments on olefiant gas and carburetted hydrogen. In 1831 Thomson said Dalton told him that ... 

The portion which is acted upon by oxymuriatic acid is either a gas hitherto not described, or a mixture of olefiant gas and one or two other gases that have not yet been characterized. . . this new gas. .. for the present I shall call superolefiant. .. In order to form a gas of this character it would only be required to combine an atom of olefiant gas with I of carburetted hydrogen, and to condense them both into the space of i atom of olefiant gas. Another supposition might be made, of two atoms of olefiant gas united and comprised in the space of one. In this case, 100 measures would give 400 carbonic acid and require 600 oxygen. This supposition would fall within the compass of the results. [This would be correct]. .. it would seem the most simple way of accounting for the phenomena to suppose that part of the gas from oil which we have called superolefiant gas to be a mixture of ordinary olefiant gas, and a new one of double its power,. .. at present the subject must remain in uncertainty. The note added in May 1823 says I think it is nearly demonstrable that oil gas is a mixture of... 

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