Systems

( Systemes, Fr. ) In fortification, a particular arrangement or disposition of the different parts which compose the circumference of a town or fortified place, according to the original idea or invention of an engineer. The systems best known under this head, and most followed, are those of Vauban, Cohorn, De Ville, Pagan, . See Fortification. t. T . The form of a subterraneous arrangement in mining; so called from its resemblance to that letter.