A History of Inventions, Discoveries, and Origins, Volume II (of 2)

A considerable part of what has hitherto been quoted from Pliny, may be found also in Vitruvius630. The latter, in like manner, mentions huts for making lamp-black; he speaks also of ivory-black, and says expressly, that when it is properly made it not only forms a good colour and excellent ink, but approaches very near to Indicum.

Now I might here ask, whether it is at all probable that the learned Pliny and the practical connoisseur of painting, the architect Vitruvius, could consider and describe our blue indigo as a pigment which, like lamp-black, could be employed as a black colour and as ink? Is it credible that Pliny, if he meant blue indigo in the before-mentioned passage, would have said that he was not able to learn the preparation of it, when he expressly describes it, as he believed it to be, in the course of a few lines further? Would Pliny and Vitruvius, had they been acquainted with black indigo only, remark immediately after, that, when costly indigo could not be obtained, earth saturated with woad, consequently a blue earth, might be used in its stead? Is not allusion here made to a blue pigment, as was before to a black one? Is it not therefore evident, that the name of Indicum was given to a black and also to a blue pigment brought from India? And if this be the case, is it not highly probable that the black Indicum was what we at present call Indian ink, which approaches so near to the finest ivory-black, and black of wine lees, that it is often counterfeited by these substances, a preparation of which is frequently sold as Indian ink to unwary purchasers? Indian ink is in general use in India, and has been so in all probability since the earliest ages. In India all artificial productions are of very great antiquity; and therefore I will venture to say, that it is not probable that Indian ink is a new invention in India, although it may probably have been improved, and particularly by the Chinese.

To confound the two substances, however, called indigo (indicum) at that period was not possible, as every painter and dealer in colours would know that there were two kinds, a blue and a black. It has, nevertheless, occurred to me, that in the works of the ancients obscurity may have sometimes been avoided by the addition of an epithet; and I once thought I had found in Pliny an instance of this foresight; that is, where he names all kinds of colours —purpurissum, Indicum cæruleum, melinum, auripigmentum, cerussa631. I conceived that in this passage our indigo was distinguished from the black indicum by the epithet cæruleum. But my joy at this discovery was soon damped by Hardouin, who places between Indicum and cæruleum a comma, which is not to be found in many of the oldest and best editions. I cannot, therefore, get rid of this comma; for it is beyond all dispute that cæruleum was the common appellation of blue copper ochre, that is, mountain blue. I shall now proceed to examine whether my observation be true, that the Greeks frequently used the term black indicum, when they meant to denote the black, and not the blue.

The term nigrum Indicum occurs in Arrian, Galen, Paulus Ægineta, and perhaps in the works of other Greek physicians; and as the Latin writers were acquainted with an Indicum which dyed black, there is reason to conjecture that this was the Indicum nigrum of the Greeks, though I should rather be inclined to translate this appellation by the words Indian black, in the same manner as we may say Berlin blue, Roman red, Naples yellow, Brunswick green, Spanish brown, &c.; or I should as readily translate it Indian ink. Arrian introduces it along with other Indian wares. I do not indeed find that he makes any mention of indigo properly so called; but a complete catalogue of merchandise is not to be expected from him. Indicum, however, occurs once more in this author; but in the passage where it is found it is only an epithet to another article. Speaking of cinnabar, he adds, that he means that kind called Indian, which is obtained from a tree in the same manner as gum. I am inclined to think that he alludes to dragon’s blood, which on account of its colour was at that time called cinnabar.

Some have conjectured that what in Arrian is named laccos chromatinos was our indigo, which indeed might be classed among the lakes, according to the present meaning of that word. Others understand by it gum-lac632. But I am unacquainted with any proofs that gum-lac was known at so early a period. I much doubt whether this meaning of the word lac be so old; and I must confess that the opinion of Salmasius appears to me highly probable, namely, that Arrian alluded to a kind of party-coloured garment: for besides the grounds adduced by Salmasius, it deserves to be remarked, that in the passage in question different kinds of clothes, and no other articles are mentioned. Besides, the epithet chromatinos is applied by the same writer, in the same sense, to other kinds of clothing. It cannot therefore be said that Arrian mentions our gum-lac, the origin of which word Salmasius endeavours to discover.

In the works of Galen, which have not yet been sufficiently illustrated, I have found Indicum nigrum only four times. In a place where he speaks of diseases of the eyes633, he extols it on account of its cleansing quality; and says it can be used for wounds, when there is no inflammation. In another place634, it occurs in three prescriptions for eye-salves. I have however endeavoured, but without success, to find in this excellent writer an explanation of what he calls Indicum; though he has explained almost all the different articles then used in the Materia medica. It appears therefore that the Greeks gave the name of Indicum to our indigo, and also to Indian black or Indian ink.

It however cannot be denied that, in opposition to this opinion, considerable doubts arise. Many who think that the black indigo (nigrum Indicum) of Pliny and Vitruvius was not ink, but our indigo, remark, that things of a dark blue or dark violet colour were by the Greeks and the Romans frequently named black; and therefore that the blue indigo might in this manner be called black635. But the examples adduced as proofs are epithets applied by the poets to dark-coloured flowers. Because nature produces no black flowers, the poets, who are fond of everything uncommon, extraordinary, and hyperbolic, call flowers black, when they are of so dark a tint as to approach nearly to black. Thus clear and deep water is called black. It is however hardly credible that painters and dyers, who must establish an accurate distinction between colours, should have spoken in so vague a manner. Salmasius suspects that Nil and Nir, the Arabic names of indigo, have arisen from the Latin word niger.

The objection, that Paulus Ægineta, the physician, in a passage where he refers to Dioscorides for the medical virtues of Indicum, applies to it the epithet black, seems to have more weight636. It may be added also, that the virtues, in general, which Galen ascribes to the Indicum nigrum, appear to be similar to those ascribed by Dioscorides to Indicum; and the latter in one place637, where he speaks of the healing of wounds, uses only the expression Indicum, and not Indicum nigrum. It is particularly worthy of remark, that Zosimus, the chemist, declares the hyacinth colour of the ancients, that of woad, and the Indicum nigrum, to be the same638 or similar. But to those who know on how slight grounds the ancient physicians ascribed medicinal qualities to many substances, it will not perhaps appear strange, that, in consequence of the same name, they should ascribe the same qualities to two different things. It is not improbable that in cases of external injury, for which the Indicum nigrum was recommended, indigo and Indian ink might produce as much or as little effect. I should consider of far greater importance the opinion of the chemist Zosimus; but unfortunately his writings have not yet been printed. The period in which he lived is still uncertain, and it is not known whether all the chemical manuscripts which bear that name were written by the same author.

From what has been said, I think it may, at any rate, be inferred, that in the time of Vitruvius and Pliny, indigo, as well as Indian ink, was procured from India, and that both were named Indicum. It is less certain that the Greeks called indigo Indicum, and Indian ink Indian black. Nay, it appears that indigo, on account of the very dark blue colour which it exhibits both when dry and in the state of a saturated tincture, was often named Indian black. In my opinion, it is proved also that, in the old dye-houses, the workmen collected the scum thrown up by the dye-pans, and dried it into a kind of lake or carmine.

I shall now prove what I have already asserted, that indigo was at all times used, and continued without interruption to be imported from India. I shall quote mention made of it in various centuries; but I am convinced that attentive readers may find instances where it occurs in many other writers.

The Arabian physicians, it is probable, all speak of indigo; but it is unfortunate that in this point we must depend upon very incorrect Latin translations. It appears also that they often repeat the information of the Greeks, in regard to articles of the Materia medica, without having been acquainted with them themselves. Rhases, who lived at the end of the tenth century639, mentions, “Nil, alias Indicum.” Avicenna, who died in 1036, often speaks of indigo640; but in the margin of the wretched translation it is remarked, that under the term Indicum, alum (or much rather green vitriol) is to be understood. In a passage, however, where he speaks of dyeing the hair black, he certainly alludes to indigo, which, according to the translation, produced colorem pavonaceum, or a violet colour. In the Latin we find “Indicum indum bonum,” and this awkward expression Salmasius explains by remarking, that the words in the Arabic are Alusma Alhendia, that is, Indian woad. In the same place he mentions Indicum carmenum, a kind of indigo which did not dye so much a violet colour as a black, that is to say with the addition of green vitriol. Carmania, indeed, bordered on Gedrosia, which is the proper country of indigo, where the best is still prepared at Guzerat. In the explanation of some Arabic words, printed in my copy of Avicenna, Indicum is translated granum Nil. Serapion, about the end of the eleventh century, mixed together, as appears, every thing that the Greeks have said in regard to indigo and woad. Averroes, in the middle of the twelfth century, mentions the medicinal qualities of indigo as given by the Greeks, and adds, that it was much used for dyeing.

Muratori gives a treaty, written in Latin, of the year 1193, between the citizens of Bologna and Ferrara, which contains a list of those articles subject to pay duty. Among these occurs indigum641. In the thirteenth century, the celebrated Marco Polo, who spent twenty-six years in travelling through Asia, and even some parts of China, relates that he saw indigo, which the dyers used, made in the kingdom of Coulan or Coilum; and he describes the process for preparing it642. Much curious information in regard to the trade with this article, in the middle of the fourteenth century, is contained in the valuable work of Francesco Balducei Pegolotti643. We there find the names of different kinds, such as Indaco di Baldacca detto buccaddeo, in all probability from Bagdad, a city which in many old books of travels is called Baldach or Baldac; also Indaco del Golfo, Indaco di Cipri, Indaco Rifanti. Indigo, at that time, was imported in hides (cuojo), or in leather bags (otre), and also in boxes (casse). What this traveller says in regard to the signs by which its goodness may be known, is very remarkable. Nicolo Conti, who travelled through India before the year 1444, mentions endego among the merchandise of Camboia644. That the expression color indicus was used in the middle ages to denote blue mixed with violet, is proved by Du Cange. It appears to me therefore highly improbable that indigo should not be known to Rosetti, as Professor Bischof supposes645. In that important work on dyeing, however, which I mentioned long ago646, it occurs several times, and always under the name endego.

I shall here make one observation, which is of some importance in the history of dyeing. It is found that in the middle ages the Jews maintained in the Levant a great many establishments for dyeing, and were the principal people who carried on this branch of business. Benjamin the Jew, who died in 1173, says in his travels, in speaking of some places, that “a Jew lived there who was a dyer;” or he remarks, in regard to others, that “most of the Jews followed the occupation of dyeing.” A scarlet-dyer lived at Tarento, and a purple-dyer at Thebes. At that period the Jews at Jerusalem had hired from the king a place particularly well-fitted for dyeing, on the express condition that no person besides themselves should be suffered to carry on there the same business647. I am fully aware that well-founded doubts have been entertained in regard to the credit which ought to be given to Benjamin’s narration, and Jewish vanity is everywhere well-known; but I do not see why he ought not to be believed in regard to this point; for it may very naturally be asked, why he should have falsely ascribed this occupation to his countrymen and no other? He speaks only once of a Jew glass-maker, a woollen- and a silk-weaver. To this may be added, that it is frequently stated in various authors, that the business of dyeing was carried on in Italy by the Jews. Thus, in the eleventh century, among the branches of revenue arising to the popes from Benevento, mention is made of the taxes paid by the Jews on account of their dye-houses. In the middle ages princes seem to have maintained dye-houses on their own account. Instances occur of their giving away, as presents, such establishments with all their apparatus648. A place of this kind was called tincta, tingta, or tintoria. This dye regale is to be deduced perhaps from the old establishments for dyeing purple, which could be formed only by sovereigns, and not by private individuals. Along with these tinctæ the Jews are often mentioned, so that it appears probable they were employed there as workmen.

There is reason therefore to conjecture that the Jews learned this art in the East, and that they employed in Italy the same pigments as were used in the dye-houses of the Levant. It is not improbable also, that in the room of woad, which was then cultivated in Italy, they introduced indigo, a substance richer in colouring matter, or at any rate, rendered it more common. The Italians were the first people in Europe who brought this art to a greater degree of perfection, as they did many others; and it can be proved that the knowledge of it was thence diffused to other countries. In the same proportion as this took place, indigo, in my opinion, banished the native woad, which was neither so advantageous, nor communicated so beautiful a colour as the Italians were able to dye with the former. The use of it became more extended when the productions of the East Indies were brought to Europe by sea, and particularly after it could be obtained from America at a much cheaper rate.

The first Portuguese ship, that commanded by Vasco de Gama, returned from the East Indies in the year 1499, and was soon followed by several more, all laden with the most valuable merchandise of the East. I have never yet been able to find any invoice of the cargoes of these vessels; and, unfortunately, we have no account of the early trade carried on by the Portuguese with Indian productions. I have no means, therefore, of proving that indigo was among the commodities first imported. Spices, which in consequence of the general prevalence of luxury, sold at that time exceedingly dear, together with precious stones, formed, no doubt, the first articles of trade; but it is not improbable that they were soon followed by indigo, for all the travellers who about that period visited India, speak of it as one of the most current articles.

Barbosa, a Portuguese, who collected there in 1516 valuable information in regard to geography and trade, who afterwards accompanied Magelhaens on his voyage round the world, and perished with him at the island of Zebu, has given a price-current of the merchandise at Calecut, in which the value of good indigo at that time is stated649. Corsali also, in his letters written from India in 1516, mentions indigo among the wares of Camboya. Louis Guicciardini, who wrote first in 1563, and died in 1589, speaking of the merchandise obtained by Antwerp from Portugal, mentions anil among that of the East Indies650.

It is however certain that the trading company established in the Netherlands in 1602, who learned at an early period the art of rendering indispensably necessary to the Europeans cottons, tea, sago, and other things of which they could always hope to find a sufficient supply in India, carried on the greatest trade with these articles. The first German writers who complain of indigenous woad being banished by indigo, and those sovereigns who, by public orders, endeavoured to prevent this change, ascribe the fault to the Netherlanders. Niska, who wrote in 1630, says indigo had been introduced into Germany only thirty years; and an order of the emperor Ferdinand III., dated 1654, says that it had been imported into Germany from Holland some years before that period.

That the importation at this time was very great, is proved by the cargoes of the ships which arrived in Holland from the East Indies in 1631. The first had 13,539 pounds of Sirches indigo; the second 82,734 pounds of Guzerat indigo; the third 66,996 pounds of the same; the fourth 50,795 pounds of Bajano indigo; the fifth 32,251 pounds of Chirches indigo; the sixth 59,698 pounds of Bejana indigo; and the seventh 27,532 pounds of Chirches. I have mentioned these so particularly, as one may thence see the different kinds, and the places where made. These seven vessels, therefore, brought to Europe 333,545 pounds, which, at a low valuation, were worth five tons of gold, or 500,000 dollars. In the month of April 1633, three ships brought home 4092 kartel of indigo, which were worth 2,046,000 rix-dollars.

The profit attending this trade induced people, soon after the discovery of America, to manufacture indigo in that country; and they were the more encouraged to do so by observing that the native Americans, before they had the misfortune to become known to the Christians, tinged their bodies and faces of a blue-violet colour, by means of indigenous plants, which resembled the indigo plant of Asia.

Whether the two plants are of the same genus, or whether the American is different from that used in the other quarters of the globe, has not yet, as far as I can find, been with certainty determined651. It is however proved, that the assertion of Raynal and others, that this plant was first conveyed to the new world from Asia by the Europeans, is entirely erroneous. It is mentioned by Francis Colon (or Columbus), in the Life of his father652, among the valuable productions of the island of Hispaniola or St. Domingo. Francis Hernandes reckons it among the natural plants of Mexico, and says that the Americans used it for dyeing their hair black. He adds, that they made from it a pigment which they named Mohuitli and Tleuohuilli, the same as the Latins named cæruleum, and he describes also the method of preparing it. This is confirmed by Clavigero in his account of Mexico.

This plant therefore must be reckoned among the few which are indigenous in three-quarters of the globe. It is, however, highly probable that the Europeans, in the course of time, introduced a better species or variety into America, where several kinds are actually cultivated at present.

In the history of the American indigo, I must here leave a considerable hiatus, which perhaps may be one day filled up from books of travels and topography. All that I know at present is, that the first indigo brought to Europe was procured from Guatimala, consequently from Mexico, and that this article was supplied at first, and for a long time, by none of the West India islands but St. Domingo alone.

Krunitz says653, but on what authority I do not know, that Lopez de Gomes relates, that in his time a very fine sky-blue colour was prepared in Hispaniola. If the person here alluded to be Lopez de Gomara, who accompanied Ferdinand Cortez as chaplain654, this would be the oldest testimony that could be expected, and would correspond with the account given by Labat. But I shall leave the further investigation of this subject to others, and observe, that the cultivation of indigo was begun in Carolina in 1747, and according to Anderson, was encouraged the year following by premiums.

This article, therefore, was brought from both the Indies to Europe, and recommended itself so much by the superiority and richness of its dye, by the facility with which it could be used, and the advantages attending it, that it suddenly banished from all dye-houses the European woad, which was cultivated, in particular, in Thuringia in Germany, in Languedoc in France, and in the neighbourhood of Rieti in the dominions of the church. At first, a small quantity of indigo only was added to the woad, by which the latter was improved; more was afterwards gradually used, and at last the quantity became so large, that the small admixture of woad served only to revive the fermentation of the indigo, but was not capable itself of communicating any colour. It was soon observed that every yard of cloth could be dyed somewhat cheaper when indigo was used along with woad, than when the latter was employed alone, according to the ancient method. Germany then lost a production by which farmers, merchants, carriers, and others, acquired great riches.

In the sixteenth century people began, in many countries, to make considerable improvements in dyeing. For this purpose, new dye-stuffs, both indigenous and foreign, were subjected to experiment, and trials were made with salts which had never before been employed. In this manner dyers sometimes obtained colours which pleased by their novelty and beauty; but it needs excite no surprise that many new methods of dyeing did not produce the desired effect. Many communicated colours which were agreeable to the eye, but they soon faded; and some rendered the dyed cloth so tender that it soon rotted on the shopkeepers’ shelves. Governments conceiving it then necessary to do something for the security of the purchaser, considered the imperfection of the art as a premeditated deception; and as it was at that time supposed that some pigments could give durable and genuine colours, and others fading or false ones; and also that the pernicious effects of salts could not be prevented or moderated, they, in general, prohibited the use of all new materials from which hurtful consequences had been observed to arise.

Legislators are neither almighty, omniscient, nor infallible. With the best views, and a firm determination to discharge their duty, they may recommend things hurtful, and prohibit others that might be attended with advantage. Were their commands and prohibitions inviolable, insuperable, and irresistible, they would often confine the progress of the arts and sciences, and render useful inventions impossible. But the people, when they have not entirely become machines, know how to elude, even at great personal hazard, faulty regulations, and by prohibited ways to obtain greater advantages than those which formed the object of the orders issued by their government. This was the case in regard to the art of dyeing in the sixteenth century.

A recess of the diet held in 1577, prohibited, under the severest penalties, the newly invented pernicious, deceitful, eating, and corrosive dye called the devil’s dye, for which vitriol and other eating substances were used instead of woad. This prohibition was renewed in 1594 and 1603, with the addition of this remark, that, in consequence of the weight of the bad dyes, a pound of undyed silk for sewing or embroidery would produce two or three pounds of dyed655.