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Updated: May 20, 2025
He says further: 'Some of the results may not be undeserving notice for practical purposes as those in the instances of sulphuretted hydrogen, oil of turpentine, and camphor, in relation to the destruction of parasitical insects, whether infesting plants or minerals, or to the preservation of substances from the attacks of insects.
The chief among these are the acid gases known as hydrochloric acid, sulphurous acid, sulphuretted hydrogen, carbonic acid, and boracic acid; and with these acid gases there issue hydrogen, nitrogen ammonia, the volatile metals arsenic, antimony, and mercury, and some other substances. These volatile substances react upon one another, and many new compounds are thus formed.
The acid from the Glover tower is purified by special treatment for example, the arsenic may be removed, after precipitation with sulphuretted hydrogen, in the form of insoluble arsenic sulphide, and the purified acid is concentrated by heating in glass or platinum vessels.
Thus, if galena and zinc blende in acid solutions be connected in the usual manner by a voltaic pair, sulphuretted hydrogen is evolved from the surface of the former, and a current generated which is sufficient to reduce gold, silver or copper from their solutions in coherent electro-plate films.
In the afternoon the laboratory was filled with the most abominable stench, in which the penetrating aroma of spike-lavender and the stink of sulphuretted hydrogen were predominant. I must add that tobacco was habitually smoked in this room, and in abundance.
The melancholy story of Mr Parrett and the sulphuretted hydrogen was recounted. "It's a pity," said he, gravely. "I wonder if Paddy would mind giving us a licking instead," suggested Pilbury, whose hands were of the horny kind. Even the others whose palms were less seasoned seemed willing to fall in with this alternative, but Riddell discouraged it. "No," said he, "he's not likely to do that.
The main exciting cause of drunkenness is, I believe, firmly, bad air and bad lodging. A man shall spend his days between a foul alley where he breathes sulphuretted hydrogen, a close workshop where he breathes carbonic acid, and a close and foul bedroom where he breathes both.
But numerous experiments prove that, as a rule, the air contains free ozone, though in very variable proportions; from which we may conclude that no oxidizable miasm sulphuretted hydrogen, for example can exist in such an atmosphere, any more than it could exist in air containing but a trace of chlorine.
The short cut led through a forest and a swamp, which reeked with nauseating sulphuretted hydrogen. We avoided it on return by a détour. After a short hour's walk we ascended a banana-grown hillock, upon which lay the ruins of the little mining-village Abesebá. It was everywhere drilled with pits, and we obtained fine specimens from one which measured twenty feet deep.
Especially scrape off any small sponges, and see that no worms have made their twining tubes of sand among the weed-stems; if they have, drag them out; for they will surely die, and as surely spoil all by sulphuretted hydrogen, blackness, and evil smells.
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