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Hydrosulphuric Acid

or sul- (H₂S), is a colorless inflammable gas (H2S), is a colorless inflammable gas ous organic matters. Many mineral waous organic matters. Many mineral waters contain it naturally. It may be arvapor in hydrogen, or by passing hydrovapor in hydrogen, or by passing hydrogen through sulphur. It has a sweet taste but a very nauseous odor as of rotten eggs. It has poisonous effects shown that birds perished in air which contained 1/1500th part of the gas.