Rogeri Baconis Anglici de Arte Chymiae Scripta (Frankfort, 1603) - a collection of small tracts containing Excerpta de Libro Avicennae de Anima, Breve Breviarium, Verbum Abbreviatum, 3 Secretum Secretorum, Tractatus Trium Verborum, and Speculum Secretorum; (5) Perspectiva (1614), which is the fifth part of the Opus Majus; (6) Specula Mathematica, which is the fourth part of the same; (7) Opus Majus ad Clementem IV ., edited by S.
The king was also bound to insure the horses of his men by a system called the restor: if a vassal lost his horse otherwise than by his own fault, it must be replaced by the treasury (which was termed, as it also was in Norman Sicily, the secretum).'
It is true that the king had a revenue, collected by the vicomte and paid into the secretum or treasury - a revenue composed of tolls on the caravans and customs from the ports, of the profits of monopolies and the proceeds of justice, of poll-taxes on Jews and Mahommedans, and of the tributes paid by Mahommedan powers.
They were elected for the term of one year and re-eligible only after an interval, and they were supported by a municipal council (commune consilium, consilium magnum or secretum or generale, or colloquium) and a general assembly (parlamentum, concio, commune consilium, commune, universitas civium), which, however, as a rule was far from comprising the whole body of citizens.
Hence arose the use of the counterseal, which might be an impression from a matrix actually so called (contrasigillum), or that of a signet or private seal (secretum), such countersealing implying a personal corroboration of the sealing.