Stella (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

The Travels of Marco Polo

Stella relates that the Genoese armament sent against Cyprus, in 1373, among other great machines had one called Troja (Truia?), which cast stones of 12 to 18 hundredweights; and when the Venetians were besieging the revolted city of Zara in 1346, their Engineer, Master Francesco delle Barche, shot into the city stones of 3000 lbs. weight.