Название: A History of Inventions, Discoveries, and Origins
Автор: Johann Beckmann
Издательство: Bookwire
Жанр: Документальная литература
isbn: 4064066382865
isbn:
591 “In Holland there is turf, and in England there are coals, neither of which are good for burning either in apartments or in melting-houses. I have, however, discovered a method of burning both these to good coals, so that they shall not only produce no smoke or bad smell, but yield a heat as strong for melting metals as that of wood, and throw out such flames that a foot of coal shall make a flame ten feet long. This I have demonstrated at the Hague with turf, and proved here in England with coals, in the presence of Mr. Boyle, by experiments made at Windsor on a large scale. It deserves to be remarked on this occasion, that as the Swedes procure their tar from fir-wood, I have procured tar from coals, which is in everything equal to the Swedish, and even superior to it for some purposes. I have tried it both on timber and ropes, and it has been found excellent. The king himself ordered a proof of it to be made in his presence. This is a thing of very great importance to the English, and the coals after the tar has been extracted from them are better for use than before.”—Narrische Weisheit und weise Narrheit. Frankfurt, 1683, 12mo, p. 91. Boyle seems to speak of this invention in The Usefulness of Natural Philosophy, London, 1774, fol. i. p. 515. The burning of coals in order to procure from them rock-oil, which was used particularly by the leather manufacturers, and which on that account could not be exported, was much practised in England. It appears, however, that something of the like kind was attempted before Becher’s time; for in the year 1627, John Hacket and Octav. Strada obtained a patent for their invention of rendering coals as useful as wood for fuel in houses without hurting anything by their smoke. See Anderson’s History of Commerce.
592 The practice of charring turf appears however to be much older, if it be true that charred turf was employed about the year 1560 at the Freiberg smelting-houses, though that undertaking was not attended with success.—See Hoy’s Anleitung zu einer bessern Benutzung des Torfs. Altenburg, 1781.
593 Von Carlowitz, Sylvicultura Œconomica. Leipzig, 1713, fol. p. 430, where an account is given of the first experiment.
594 In Hamburgischen Berichten, p. 93.
595 Ib. p. 170.
ARTICHOKE.
That I might be able to investigate whether our artichoke was known to the ancients, I have not only collected a variety of scattered passages, compared them with one another and with nature, and laboured through a tedious multitude of contradictions and a confusion of names, but I have also been obliged to examine a load of groundless conjectures, heaped together by commentators596, in order that I might understand them and ascertain their value. By these means I have learned more than seems hitherto to have been known; and I have found that more is believed than can be proved; but that the fruits of my toil will give complete satisfaction to my readers, I do not pretend to hope. Before the botany, however, and the natural history in general of the ancients can be properly elucidated, before truth can be separated from falsehood, what is certain from what is uncertain, and things defined from those which are undefined, researches of this kind must be undertaken, and the same method as that which I have followed must be adopted.
The names of plants in ancient authors which have been applied to our artichoke, are the following: Cinara, Carduus, Scolymus, and Cactus.
The Cinara, which is originally a Greek word, belonged certainly to the thistle species; and the description of its top, as given by Columella597, seems, as has already been remarked by Nonnius598 and others, to agree perfectly with that of our artichoke. The cinara was commonly furnished with prickles, but that was preferred which had lost them by cultivation, and for which means were prescribed that did not produce the desired effect599. It was raised from seed sown in spring, but was propagated also from slips or shoots which in Italy were planted in autumn, that they might bear earlier the next summer600. The direction given to water these plants frequently, is still followed by our gardeners in respect to their artichokes, and they expect from this attention that the fruit will be more abundant and tender. By this method many give to their artichokes a superiority which others that have not been watered so carefully cannot attain. A complaint, which occurs in ancient authors, is also prevalent, that the roots are often destroyed by mice. I do not, however, find it remarked what part of the cinara was properly used, but it may be conjectured it was the top, because the tender fruit is praised601.
Carduus, among the Romans, was the common name of all plants of the thistle kind. It occurs among those of weeds602, and may be then properly translated by the word thistle. It, however, often signified an eatable thistle; and this has given Pliny occasion to make use of an insipid piece of raillery, when he says that luxury prepared as food for man what would not be eaten by cattle.
It is an old and common fault, that when the Greek and Roman authors have not given us such descriptions of natural objects as are sufficient to enable us to ascertain exactly what they are, we suppose that they have been known under different names, and a variety of characteristics are drawn together to enable us to determine them. What, for example, we find respecting the cinara is too little to give a just idea of the plant; we read somewhat more of the carduus; and because between these there seems to be an affinity, it is concluded that the cinara and the carduus were the same plant; and everything told us respecting both of them is thrown into one. Some even go further, and add what they find under a third or a fourth name. It is indeed true, that many natural objects have had several names, and the species may sometimes be rightly guessed; but conjecture ought never to be admitted unless the identity can be fully established; else one may form such a monstrous production as Horace has delineated, when he says,
Humano capiti cervicem pictor equinam
Jungere si velit, et varias inducere plumas,
Undique collatis membris—
I wish commentators would follow the example of our naturalists, who consider a plant as a distinct species until it has been proved on sure grounds that it is nothing else than a variety of a plant already characterized. I should not therefore affirm that the cinara and the carduus are the same, were I not able to produce the following incontestable proofs in support of my assertion.
In the first place, the Latins, Palladius and Pliny, give us the same account of the carduus that Columella and the Greeks do of the cinara. The former lost its prickles through cultivation603; its flowers were also of a purple colour604; it was propagated by seed and by shoots; it required frequent watering; and it was remarked that it throve better when the earth was mixed with ashes. Had not the carduus and the cinara been the same, Palladius and Pliny would have mentioned the latter; СКАЧАТЬ