Avicenna in his account of worms condenses all the information contained in the Greek authors, but we do not find that he supplies anything new. He in particular copies freely from Aëtius and our author. The same may be said of Serapion, who recommends wormwood, bitter lupines, calamint, peach leaves, cabbage, onions, thyme, colocynth, &c. Averrhoes says that the lumbrici in general are removed by bitters, such as wormwood or wormseed, but that the cucurbitini (tæniæ) require strong medicines. Of the pineæ nuces he says, “Occidunt vermes qui sunt in ventre.” (Collig. v, 42.) Probably this hint may have led to the use of turpentines for the cure of tænia. Avenzoar attributes the formation of worms to ill-digested food in the stomach, and recommends much the same remedies as the Greeks. Haly Abbas describes the three species of worms, and details the symptoms of them. He remarks that these animals are to be killed by medicines of a hot and dry nature, such as bitters. He recommends wormwood, fern, and the like, pounded with honey, vinegar, &c. The remedies mentioned by Alsaharavius are oils, bitters, and drastic purgatives. He treats of lumbrici very fully. Rhases recommends in general terms bitters; for the round, wormwood, for the broad, (tæniæ, called by him semina cucurbita) seriphium, bitter lupines, narcissus, &c. And for the ascarides he directs us to apply a suppository of wool dipped in the gall of a bull. He remarks that they occur most frequently in autumn, being engendered by fruit. He states correctly that they often bring on epilepsy, and looseness of the bowels. He much commends the oil of unripe olives.
Vegetius recommends nearly the same medicines for removing the vermes of cattle as those already mentioned, namely, wormwood, cresses, coriander, fenugreek, and the like, boiled in oil, and administered by the mouth and in clysters. (Mulom. i, 44; see also Columella vi, 25.)
According to Michaelis and Sprengel the ancient Brahmins were acquainted with the anthelminthic properties of the dolichos pruriens.
We have stated above that the most celebrated of the ancient savans believed in the spontaneous generation of animals. This doctrine, although generally rejected at the present time, has been advocated by many modern naturalists of great eminence, such as Baron Buffon and Professor Rudolphi. Virey gives a very impartial statement of the arguments for and against this physiological doctrine. (See Hist. des Mœurs et de l’Instinct des Animaux, ii, 121.) Mr. Madden, the traveller, relates that the bark of the pomegranate is still considered in the east as a specific, not only for ascarides, but also for the tape-worm. He says, “I have rarely seen it fail in the cure of tænia. They make a decoction of two oz. of the fresh bark in a pint of water, this they drink daily till the worm is expelled, which it generally is the third day.” (Travels in Egypt, ii, 371.)
SECT. LIX.—ON DRACUNCULUS, OR THE GUINEA-WORM.
In India and the upper parts of Egypt a class of worms called dracunculi, resembling the intestinal, are formed in the muscular parts of the body, such as the anus, thighs, legs, and in the sides of children, under the skin; and they move in a perceptible manner. Then in process of time at the extremity of the dracunculus matter is formed in the part, and the skin being opened the head of the dracunculus comes forth. But if the worm be dragged it occasions pains, and particularly when it breaks. Wherefore some say that it is proper to fix a piece of lead to the worm in order that its discharge may not take place at once, but gradually with the weight of the lead. Some disapproving of this practice, inasmuch as the worm is apt to break with the weight of the lead and occasion violent pains, direct the part to be put into hot water, in order that the dracunculus being warmed may come forward, when it is to be seized with the fingers and dragged forth by degrees. But Soranus is of opinion that the dracunculus is not an animal originally, but a nervous concretion, which has only the appearance of moving. Whether this or the former be the true account of the matter, it appears to Soranus, Leonides, and others, that they are to be treated with the affusion of warm water, and digestive cataplasms made of honied water and the flour of wheat or barley; and they approve of sometimes using a plaster possessed of similar properties. Wherefore that from bay-berries, and the one from honey are proper. For by the use of these the dracunculus or concretion dies and falls out. But when suppuration takes place, if it does not fall out, the skin is to be divided, and the part being laid open, that which is contained in it is to be taken out, when a tent is to be put into the skin, and then the treatment for suppurations is to be applied.
Commentary. The following authors treat of the vena medinensis, or dracunculus, now generally called the Guinea worm: Galen (De Loc. Affect. vi, 3; Isagoge;) Aëtius (xiv, 85); Pollux (Onomast. iv); Plutarch (Symp. viii, 9); Theophrastus (H. P. ix); Actuarius (Meth. Med. vi, 8; iv, 16); Avicenna (iv, 3, 2, 21); Avenzoar (ii, 3, 20); Haly Abbas (Theor. viii, 18); Alsaharavius (Pr. xxviii, 12); Rhases (ad Mansor. vii, 24; Cont. xxvi.)
Galen admits that he had never seen the dracunculus, and that therefore he could not be positive respecting its origin and nature. He had known many persons, however, who had seen it, and was inclined to believe that it is of a nervous nature, and resembles lumbrici only in colour and thickness. The author of the Isagoge states that dracunculi resemble varices, and that when they project or move about they occasion great pain, and are to be removed by making an incision of the skin as for varices.
Plutarch briefly mentions the dracunculus as being a disease which had newly attacked the inhabitants of the country adjoining the Red Sea.
Aëtius professes to derive his account of the dracunculus from Leonides. He says, like our author, that it is formed most commonly in the legs and muscular parts of the arms in India and Ethiopia, and that the generation of it is not dissimilar to that of intestinal worms. He adds, that in process of time suppuration takes place at the end of the worm, when an opening is made in the flesh, and the head of the dracunculus protrudes. If dragged out considerable disturbance is produced, especially if the worm should be broken, for what remains occasions the most excruciating pains. He directs us, therefore, to put a ligature round the arm, and to tighten it every day so that the dracunculus may come forth by degrees without breaking. The part is to be washed with honied water, with oil in which wormwood or southernwood has been boiled, or with some such anthelminthic decoction; but all acrid things are to be avoided for fear of inflammation. He recommends us to forward suppuration by means of maturative cataplasms, and the other means mentioned by our author.