Sentence Examples with the word Umbrae

And we may suppose such identities between the symbols that on the whole only two, three, or more of the sets of umbrae are not equivalent; we will then obtain invariants of two, three, or more sets of binary forms. The symbolic expression of a covariant is equally simple, because we see at once that since AE, B, Ce,...

They include Ars Magnesia (1631); Magnes, sive de arte magnetica opus tripartitum (1641); and Magneticum naturae regnum (1667); Prodromus Coptus (1636); Lingua Aegyptiaca restituta (1643); Obeliscus Pamphilius (1650); and Oedipus Aegyptiacus, hoc est universalis doctrinae hieroglyphicae instauratio (1652-1655) - works which may claim the merit of having first called attention to Egyptian hieroglyphics; Ars magna lucis et umbrae in mundo (1645-1646); Musurgia universalis, sive ars magna consoni et dissoni (1650); Polygraphia, seu artificium linguarum quo cum omnibus mundi populis poterit quis respondere (1663); Mundus subterraneus, quo subterrestris mundi opificium, universae denique naturae divitiae, abditorum effectuum causae demonstrantur (1665-1678); China illustrata (1667); Ars magna sciendi (1669); and Latium (1669), a work which may still be consulted with advantage.