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

The Travels of Marco Polo

Such a case is that cited by Quatremère, from an Oriental author, of the discharge of stones weighing 400 mans, certainly not less than 800 lbs., and possibly much more; or that of the Men of Bern, who are reported, when besieging Nidau in 1388, to have employed trebuchets which shot daily into the town upwards of 200 blocks weighing 12 cwt. apiece.