A collection of tracts on fortification and geometry Contents as follows: Folio 1 Della Fortificatione Folio 53 Geometrica Prattica Folio 83 Della sfera Folio 104-115 Blank sheets and oddments Folio 116 Del Misurare da Contano Folio Il quaduarete Geometrico Folio Aritmetica 17th Century - 18th Century