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Updated: May 10, 2025
One day, after I had been "boot-topping" the sloop with a composition of coal-tar and other stuff, and while I was taking my dinner, with the luxury of blackberry jam, I heard a commotion, and then a yell and a stampede, as the children ran away yelling: "The captain is eating coal-tar! The captain is eating coal-tar!"
Also, "shoddy" had not been invented, nor had coal-tar dyes been discovered by the English and exploited by the Germans now groaning over the wise tyranny of the provisions of the new Patent Act, to which ignorant people have applied the offensive term "Protectionist."
In this connection it is a significant fact that those minerals which are congenial to the system, that is, those which in their organic form enter into the composition of the body, are much more easily eliminated if they have been taken in the inorganic form, than those substances which are naturally foreign and poisonous to the human organism, such as mercury, arsenic, iodine, the bromides, the different coal-tar preparations, etc.
Dyestuffs include, by definition, all the coal-tar dyes, colours, and colouring matter, and all organic intermediate products used in the manufacture of these the last category including a large number of chemicals such as formaldehyde, formic acid, acetic acid, and methyl alcohol.
The coal-tar was suggested by my nautical companion; and, for the first time on the Ancobra River, we exchanged the bouquet d'Afrique for the smell of Europe. The big crate stands high upon the right bank, here rising about twenty feet, and affording a pleasant prospect of breezy brown stream deeply encased in bright green forest.
Chemically pure Alizarin crystallises in bright-red needles; it is the colouring principle of madder, and also of Alizarin paste. But the most wonderful thing about substantive coal-tar colours is their immense tinctorial power, i.e. the very little quantity of each required compared with the immense superficies of cloth it will dye to a full shade.
The isolation of active principles long antedated the synthetical preparations, but the latter came at last the marvellous array of hypnotics, anodynes, and fever-quellers that are now at our command, largely coal-tar products.
Insomnia and headache are usually symptoms of this overfatigued, or poisoned, condition, and should both be regarded and treated as symptoms by the removal of their causes, not by the use of coal-tar products and hypnotics. Another common cause of headache is nasal obstruction, such as may be due to adenoids or deformities of the septum, or chronic catarrhal conditions.
Flounce, the terrier, snuffing disconsolately about the deck, and scratching the boards in her zeal to explore the shallow hold, at last grew weary, and came to snuggle down between the two silent companions. Not till then did the girl turn aside her face, as though studying the shore, which now melted in a soft, half-liquid band as black as coal-tar, above the luminous indigo of the river.
Boghead coal, also known as "Torebanehill mineral," gives Boghead naphtha, while the crude naphtha obtained from shales is often quoted as shale-oil. In chemical composition these naphthas are closely related to one another, and by fractional distillation of them similar series of products are obtained as those we have already seen as obtained from the crude coal-naphtha of coal-tar.
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