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Updated: June 10, 2025
The number of coal-tar colours is thus very great, and the variety also. Adjective Colours. As regards the artificial coal-tar adjective dyestuffs, the principal are Alizarin and Purpurin. These are now almost entirely prepared from coal-tar anthracene, and madder and garancine are almost things of the past.
In steaming large animals a pail about half full of boiling-hot water to which has been added about an ounce of coal-tar disinfectant, or whatever drug is required, is held within about one foot of the animal's nostrils. It is usually advisable to throw a light cover over the head and pail in order to direct the steam toward the nostrils.
You will gradually begin to understand what I am driving at. The engineer and the scientist and the chemist, within a single generation, filled Europe and America and Asia with their vast machines, with their telegraphs, their flying machines, their coal-tar products. They created a new world in which time and space were reduced to complete insignificance.
When you have a new ribbon for your hat; or a pretty red dress, or your grandmamma buys a new violet ribbon for her cap, just ask if they are dyed with aniline colors; and if the answer is "Yes," you may know that they came from the coal-tar.
This is very familiar to the costermonger fraternity as the oil which is burned in the flaring lamps which illuminate the New Cut or the Elephant and Castle on Saturday and other market nights. Thus, by the continued operation of the chemical process known as fractional distillation of the immediate products of coal-tar, these various series of useful oils are prepared.
It then suddenly explodes with a loud noise, scattering in every direction a quantity of black mud, which has a strong pungent smell resembling that of coal-tar, and is considerably warmer than the air. With the mud thus thrown out there has been formed around the mound a large perfectly level and nearly circular plain, about half a mile in circumference.
Past Vauxhall, once famed for its revelry conspicuous, now, only for its picturesque expanse of candle-factory roofs and the dead boarding that is displayed skirting the railway: Clapham, villa-studded and with gardens laid out in bird's-eye perspective: Surbiton, dainty in its pretty little road-side station, all garnished with roses and shell- walks: Farnborough, where a large proportion of our passengers, of military proclivities, alight en route for Aldershot, and celebrated of yore for the "grand international" contest with fisticuffs between a British Sayers and a Transatlantic Heenan: Basingstoke, the great ugly "junction" of many twisted rails and curiously-intricate stacks of chimneys; until, at length, Southampton was reached a town smelling of docks and coal-tar, and dismal in the evening gloom.
And so it began to be used to cover roofs of buildings, and, mixed with some other substances, made a pavement for streets; and being spread over iron-work it protected it from rust. Don't you see how many uses we have found for this refuse coal-tar?
If he is to follow out any one of the thousand branches of chemical research dealing with coal-tar products, for example, he knows his fate at fourteen or fifteen, and his eye is rarely averted from his goal until he has achieved knowledge and experience likely to help him in the great German trade success which has followed their utilisation of applied science.
Can we not get some little insight into the structure and general mode of developing the leading coal-tar colours which serve as types of whole series? I will try what can be done with the little knowledge of chemistry we have so far accumulated.
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