Carboneum Hydrogenisatum carb-h.

Carburetted Hydrogen. Ethene. Olefiant gas. C 2 H 4 . Solution in alcohol.

Apoplexy. Eyes, convulsions of. Tetanus. Whooping-cough.

This gas, which was experimented with by Sir Humphrey Davy, produces a condition almost resembling an apoplectic attack. Stupefaction: comatose; surface cold and completely insensible. Spasm as in lock-jaw. Arms flexed at elbows. One mental symptom is peculiar: an extraordinary sensation of contentment, so that life seems exalted; all his thoughts appear in a moment as if seen in an inner mirror. Many eye symptoms were noted: steady and extreme oscillation of the eyeballs. Eyes distorted. Lids half closed. Dark bodies moving before eyes. > By open air (vertigo, convulsions). It is a popular custom to take children suffering from whooping-cough to breathe the air at a gas-works. A case has been recorded in which an accidental escape of gas in a child's bedroom affected a prompt cure of its whooping-cough. Illuminating gas is a complex gas, carburetted hydrogen being the leading ingredient. In the Schema are included some symptoms produced by illuminating coal gas.

Compare: Chloroform, Æther, Amyl nit., Carboneum.

Contentment; life seems exalted; all his thoughts appear in a moment as if seen in an inner mirror. — Answers questions slowly. — Fell unconscious. — Coma.

Vertigo; < going into open air; with nausea, loss of memory and sensation. — Excruciating pain in forehead and between eyes. — Pressure in brain.

Eyes distorted; half closed. — Eyeballs oscillate steadily; synchronously with breathing (illuminating gas). — Dark bodies moving before eyes.

Staring look. — Face turgid. — Cheeks flap. — Some degree of trismus; interrupted by yawning.

Violent cramps in stomach. — Nausea and vomiting.

Involuntary passage of stool and urine. — Stools: rice-water; thin fæces mixed with dark blood and mucus.

Voice feeble and indistinct. — Paroxysms of cough. — Dyspnœa. — Violent tearing pains in thorax.

Beating of heart scarcely perceptible. — Pulse: strong, rapid, regular; or small and extremely weak.

Violent spasm in the extensors of the back.

Spasmodic stitching and trembling of limbs; felt paralysed.

Rapid fluctuation of symptoms (coal gas). — Immovable; later regained power in l. arm and hand, but r. arm and leg remained paralysed (coal gas). — Lying as if dead cold and pale, as soon as the windows were open violent convulsions set in. — Anæsthesia.

Sleep prolonged and very deep, interrupted by cramps in jaws and toes.

Skin icy cold. — Sweating copiously; sweat smells of gas (coal gas).