The imperial stores.
The emperors kept a special store of drugs of their own and had botanists in Sicily, Crete, and Africa who supplied not only them with medicinal herbs, but also the city of Rome as well, Galen says. However, the emperors appear to have reserved a large supply of the finest and rarest simples for their own use. Galen mentions a large amount of Hymettus honey in the imperial stores—ἐν ταῖς αὐτοκρατορικαῖς ἀποθήκαις,[562] whence our word “apothecary.”[563] He proves that cinnamon[564] loses its potency with time by his own experience as imperial physician. An assignment of the spice sent to Marcus Aurelius from the land of the barbarians (ἐκ τῆς βαρβάρου) was superior to what had stood stored in wooden jars from the reigns of Trajan, Hadrian, and Antoninus Pius. Commodus exhausted all the recent supply, and when Galen was forced to turn to what had been on hand in preparing an antidote for Severus, he found it much weaker than before, although not thirty years had elapsed. That cinnamon was a commodity little known to the populace is indicated by Galen’s mentioning his loss in the fire of 192 of a few precious bits of bark he had stored away in a chest with other treasures.[565] He praises the Severi, however, for permitting others to use theriac, a noted medicine and antidote of which we shall have more to say presently. Thus, he says, not only have they as emperors received power from the gods, but in sharing their goods freely they are like the gods, who rejoice the more, the more people they save.[566]
Galen’s private supply of drugs: terra sigillata.
Galen himself, and apparently other physicians, were not content to rely for medicines either upon the unguent-sellers or the bounty of the imperial stores. Galen stored away oil and fat and left them to age until he had enough to last for a hundred years, including some from his father’s lifetime. He used some forty years old in one prescription.[567] He also traveled to many parts of the Roman Empire and procured rare drugs in the places where they were produced. Very interesting is his account of going out of his way in journeying back and forth between Rome and Pergamum in order to stop at Lemnos and procure a supply of the famous terra sigillata, a reddish clay stamped into pellets with the sacred seal of Diana.[568] On the way to Rome, instead of journeying on foot through Thrace and Macedonia, he took ship from the Troad to Thessalonica; but the vessel stopped in Lemnos at Myrine on the wrong side of the island, which Galen had not realized possessed more than one port, and the captain would not delay the voyage long enough to enable him to cross the island to the spot where the terra sigillata was to be found. Upon his return from Rome through Macedonia, however, he took pains to visit the right port, and for the benefit of future travelers gives careful instructions concerning the route to follow and the distances between stated points. He describes the solemn procedure by which the priestess from the neighboring city gathered the red earth from the hill where it was found, sacrificing no animals, but wheat and barley to the earth. He brought away with him some twenty thousand of the little discs or seals which were supposed to cure even lethal poisons and the bite of mad dogs. The inhabitants laughed, however, at the assertion which Galen had read in Dioscorides that the seals were made by mixing the blood of a goat with the earth. Berthelot, the historian of chemistry, believed that this earth was “an oxide of iron more or less hydrated and impure.”[569] In another passage Galen advises his readers, if they are ever in Pamphylia, to lay in a good supply of the drug carpesium.[570] In the ninth book of his work on medicinal simples he tells of three strata of sory, chalcite, and misy, which he had seen in a mine in Cyprus thirty years before and from which he had brought away a supply, and of the surprising chemical change which the misy underwent in the course of these years.[571]
Mediterranean commerce.
Galen speaks of receiving other drugs from Great Syria, Palestine, Egypt, Cappadocia, Pontus, Macedonia, Gaul, Spain, and Mauretania, from the Celts, and even from India.[572] He names other places in Greece and Asia Minor than Mount Hymettus where good honey may be had, and states that much so-called Attic honey is really from the Cyclades, although it is brought to Athens and there sold or reshipped. Similarly, genuine Falernian wine is produced only in a small part of Italy, but other wines like it are prepared by those who are skilled in such knavery. As the best iris is that of Illyricum and the best asphalt is from Judea, so the best petroselinon is that of Macedonia, and merchants export it to almost the entire world just as they do Attic honey and Falernian wine. But the petroselinon crop of Epirus is sent to Thessalonica and there passed off for Macedonian. The best turpentine is that of Chios but a good variety may be obtained from Libya or Pontus. The manufacture of drugs has spread recently as well as the commerce in them. The best form of unguent was formerly made only in Laodicea, but now it is similarly compounded in many other cities of Asia Minor.[573]
Frauds of dealers in wild beasts.
We are reminded that parts of animals as well as herbs and minerals were important constituents in ancient pharmacy by Galen’s invective against the frauds of hunters and dealers in wild beasts as well as of unguent-sellers. They do not hunt them at the proper season for securing their medicinal virtues, but when they are no longer in their prime or just after their long period of hibernation, when they are emaciated. Then they fatten them upon improper food, feed them barley cakes to stuff up and dull their teeth, or force them to bite frequently so that virus will run out of their mouths.[574]
Galen’s ideal of anonymity.
Besides the ancient drug trade, Galen gives us some interesting glimpses of the publishing trade, if we may so term it, of his time. Writing in old age in the De methodo medendi,[575] he says that he has never attached his name to one of his works, never written for the popular ear or for fame, but fired by zeal for science and truth, or at the urgent request of friends, or as a useful exercise for himself, or, as now, in order to forget his old age. Popular fame is only an impediment to those who desire to live tranquilly and enjoy the fruits of philosophy. He asks Eugenianus, whom he addresses in this passage, not to praise him immoderately before men, as he has been wont to do, and not to inscribe his name in his works. His friends nevertheless prevailed upon him to write two treatises listing his works,[576] and he also is free enough in many of his books in mentioning others which are essential to read before perusing the present volume.[577] Perhaps he felt differently at different times on the question of fame and anonymity. He also objected to those who read his works, not to learn anything from them, but only in order to calumniate them.[578]