It is not necessary to describe the other hieras devised by later authorities, but it may be noted that the Hiera Tralliani compounded by Alexander of Tralles (about 550 A.D.) contained scammony, and that he advises concerning it that the quantity of scammony shall not be increased, as it appears some were inclined to do, not knowing that thereby they make it useless. For he says it is not the intention that the medicine should be carried immediately through the system. It should be detained in the body and conveyed to the remote parts so as to correct the various humours, open the passages, remove the obstructions of the nerves, and make way for the motion of the spirits. This was the formula given in the P.L. 1721 under the name of Hiera Diacolocynthidis, but our present-day hiera picra has descended from the Hiera Simplex of Galen. The old dispensatories up to the eighteenth century give a liberal choice of Hieras, among which were the Hiera Simplex Galeni cum Agarice, Hiera Logadii, Hiera Antiochi, Hiera Archigenes, Hiera Tralliani, Hiera Rufi, Hiera Justi, Hiera Constantini, and others. Originally these were all electuaries made with honey. It became the practice, however, to keep them in the form of “species,” and ultimately electuaries went out of fashion altogether. LAUDANUM. Paracelsus probably invented the name of laudanum, and seems to have called several medicines by that term. In one place he expressly states that his laudanum was made from gold leaf and unperforated pearls; in other places he seems to mean red precipitate, and undoubtedly opium or a compound of it was sometimes intended. Crollius gives a formula for a pill mass, which he designates the laudanum of Paracelsus, which contained one-fourth of its weight of opium, to which were added henbane juice, mummy, salts of pearls and corals, the bone of the heart of a stag, bezoar stone, amber, musk, unicorn, and some species, with a few drops of many of the essential oils. The Anodynum Specificum of Paracelsus was a product obtained by first digesting opium, 4, in a mixture of orange and lemon juices, 180, with distilled frogs’ sperm water, to which cinnamon, 4, cloves, 45, ambergris, 4, and saffron, 45, were added. This mixture was digested for a month, and after pressing and straining, coral, magistery of pearl, and quintessence of gold, of each 2, were added, together with the salt extracted from the marc. The laudanum of the early London Pharmacopœias was a pill mass made as follows:--Thebaic opium extracted by spirit of wine, ℥i.; saffron, similarly extracted, ℥iss; castorum, ℥i; combined with ℥ss. of species of diambræ made into a tincture with spirit of wine; to these might be added, ex-gratia, ambergris and musk, of each 6 gr., and oil of nutmeg 10 drops. Evaporate the moisture and leave the mass.