In the second of these notices he gives the general formulae without demonstrations.
The work left by Napier is, however, rough and unfinished, and it is uncertain whether he knew of the other formulae or not.
Though rejected by the Jesuits, who found peripatetic formulae a faithful weapon against the enemies of the church, Cartesianism was warmly adopted by the Oratory, which saw in Descartes something of St Augustine, by Port Royal, which discovered a connexion between the new system and Jansenism, and by some amongst the Benedictines and the order of Ste Genevieve.
Constitutional formulae become of preponderating importance when we consider the more complicated inorganic and especially organic compounds.
Besides the logarithms and the calculating rods or bones, Napier's name is attached to certain rules and formulae in spherical trigonometry.