Читать книгу The Greatest Benefit to Mankind: A Medical History of Humanity - Roy Porter - Страница 20

Egypt rose under the pharaohs in the third millennium BC; the great pyramids on the plateau at Giza, dating from around 2000 BC, show a powerful regime possessed of stupendous ambition and technological virtuosity. The earliest written evidence of their medicine appears in papyri of the second millennium BC, but such records encode far older traditions. Among the medical texts, the most important, discovered in the nineteenth century, are the Edwin Smith and the Georg Ebers papyri.

Sometimes called a book of wounds, the Edwin Smith papyrus (c. 1600 BC, found near Luxor and named after an American Egyptologist) gives a head-to-foot inventory of forty-eight case reports, including various injuries and wounds, their prognosis and treatment. ‘If you examine a man having a dislocation of his mandible, should you find his mouth open, and his mouth cannot close, you should put your two thumbs upon the end of the two rami of the mandible inside his mouth and your fingers under his chin and you should cause them to fall back so that they rest in their places.’ The surgical conditions treated were wounds, fractures and abscesses; circumcision was also performed. Broken bones were set in ox-bone splints, supported by resin-soaked bandages. The papyrus refers to a raft of dressings, adhesive plasters, braces, plugs, cleansers and cauteries.

The Smith papyrus shows there was an empirical component to ancient Egyptian medicine alongside its magico-religious bent. In a similar style, the London papyrus (c. 1350 BC) describes maternal care, and the Kahun papyrus (c. 1850 BC) deals with animal medicine and gynaecology, including methods for detecting pregnancy and for contraception, for which pessaries were recommended made of pulverized crocodile dung and herbs now impossible to identify, mixed with honey. Their contraceptive measures, evidently aimed at blocking the passage of semen, may have worked, since the Egyptians seem to have been able to regulate family size without recourse to infanticide.

The Ebers papyrus (c. 1550 BC), deriving from Thebes, is, however, the principal medical document – indeed the oldest surviving medical book. Over twenty metres long, it deals with scores of diseases and proposes remedies including spells and incantations. This and other sources show the prominence of magic. Amulets were recommended, and treatments typically involved chants and supplications to the appropriate deities, the most popular being the falcon-headed sun god Ra; Thoth, the ibis-headed god of wisdom (later associated with the Greek Hermes or the Roman Mercury); and Isis and her son Horus, the god of health, whose eye formed the motif for a popular charm.

The Ebers papyrus covers 15 diseases of the abdomen, 29 of the eyes, and 18 of the skin, and lists no fewer than 21 cough treatments. About 700 drugs and 800 formulae are referred to, mainly herbs but also mineral and animal remedies. To cure night-blindness fried ox liver was to be taken – possibly a tried-and-tested procedure, as liver is rich in vitamin A, lack of which causes the illness. Eye disorders were common, and there were numerous cures:

To drive away inflammation of the eyes, grind the stems of the juniper of Byblos, steep them in water, apply to the eyes of the sick person and he will be quickly cured. To cure granulations of the eye prepare a remedy of cyllyrium, verdigris, onions, blue vitriol, powdered wood, mix and apply to the eyes.

For stomach ailments a decoction of cumin, goose-fat and milk was recommended, but other remedies sound more exotic, including a drink prepared from black ass testicles, or a mixture of vulva and penis extracts and a black lizard, designed to cure baldness. Also good for hair growth was a compound of hippopotamus, lion, crocodile, goose, snake and ibex fat.

Egyptian medicine credited many vegetables and fruits with healing properties, and used tree resins, including myrrh, frankincense and manna. As in Mesopotamia, plant extracts – notably senna, colocynth and castor oil – were employed as purgatives. Recipes include ox spleen, pig’s brain, honey-sweetened tortoise gall and various animal fats. Antimony, copper and other minerals were recommended as astringents or disinfectants. Containing ingredients from leeks to lapis lazuli – including garlic, onion, tamarisk, cereals, spices, condiments, resins, gums, dates, hellebore, opium and cannabis – compound drugs were administered in the form of pills, ointments, poultices, fumigations, inhalations, gargles and suppositories; they might even be blown into the urethra through a tube.

Archaeological evidence and papyri afford glimpses of Egyptian medical practice, at least among the elite. Part was hierarchically organized and under state control; physicians were appointed to superintend public works, the army, burial grounds and the pharaoh’s palace. Court physicians formed the apex of the medical pyramid. Just as the gods governed different body parts, physicians (swnu) specialized in particular diseases or body organs; in the fifth century BC the Greek Herodotus observed that in Egypt ‘one physician is confined to the study and management of one disease … some attend to the disorders of the eyes, others to those of the head, some take care of the teeth, others are conversant with all diseases of the bowels.’

As in Mesopotamia, the swnu formed one of three divisions of healers. The others were priests of Sekhmet, and sorcerers. Healers whose names have come down include Iri, Keeper of the Royal Rectum, presumably the pharaoh’s enema expert. (Enemas had a divine origin, being invented by ibis-headed Thoth; they were widely used, because Egyptian health lore feared putrefaction in the guts and bowels.) There was also Peseshet, head female physician or overseer, proof of the existence, as in Mesopotamia, of female healers; and the celebrated Imhotep (‘he who cometh in peace’) chief vizier to Pharaoh Zozer (fl. 27 cent, BC), high priest at Heliopolis, renowned as an astrologer, priest, sage and pyramid designer (the Step Pyramid of Sakkarah), but above all as a physician.

Imhotep became a figure akin to the Greek god Asclepius (Aesculapius in Latin). His ‘sayings’ were later recorded and preserved among the classics of Egyptian wisdom, and within a few generations he was being deified. There is, however, little evidence of his cult for another millennium, and only around 300 BC did it blossom. As with Asclepius, Imhotep became associated with healing shrines and temple sleep (incubation cures). Patients would sleep overnight in the inner precincts where they would be visited in their dreams by a god, or an emissary like a snake, and their illness or infertility remedied.

The Egyptians believed well-being was endangered by earthly and supernatural forces alike, in particular evil spirits stealing into the body through the orifices and consuming the victim’s vital substance. Health was associated with correct living, being at peace with the gods, spirits and the dead; illness was a matter of imbalance which could be restored to equilibrium by supplication, spells and rituals. Thus, someone struck blind might invoke a god: ‘Ptah, the lord of Truth, has turned his justice against me; he has rightly chastised me. Have pity on me, deign to regard me with merciful countenance.’ Handling burns, a magician would swab the wound with the milk of a mother of a baby boy, while appealing to Isis by repeating the words the goddess had supposedly used to rescue her son Horus from being burned: ‘There is water in my mouth and a Nile between my legs; I come to quench the fire.’

Surgery was limited to repairing injuries and bone fractures; sutures and cautery were used, and wound dressings to promote healing, which combined honey with grease or resin; but no surgical instruments survive. Anatomical knowledge remained limited to bones and major organs. As mummification suggests, the Egyptians did not share the taboos that have so widely forbidden tampering with corpses, but embalmers formed a separate guild and were of low caste; moreover, since mummification aimed to preserve the body intact, embalmers did not open cadavers up; they eviscerated and extracted the organs through small incisions. The brain was removed through the nose by hooks, though the heart was left in place, being the seat of the soul.

According to Egyptian medical theory, humans were born healthy, but were susceptible to disorders caused not only by demons but by intestinal putrefaction. Life lay in breath, and a speculative heart-centred physiology pictured a mesh of vessels carrying blood, urine, air, semen, tears and solid wastes to all bodily parts. This vascular network was likened to the Nile and its canals and, as with that water-system, the point was to keep it free of obstruction. Rotting food and faeces clogging the system were considered perilous, hence the need to prevent pus formation and to cleanse the innards with laxatives. Herodotus noted that three days each month were set aside for evacuating the body with emetics and enemas.

As with Mesopotamia, Egypt’s imposing political regime made for an organized medical practice. It is, however, with Greek civilization that evidence of recognizable medical discourse first appears.