Sir Politick in Venice inquires of Peregrine:

          Why came you forth
          Empty of rules for travel?
     Peregrine : Faith, I had
          Some common ones from out of that vulgar grammar
          Which he that cried Italian to me, taught me. (II, i)

Later in Act IV, Sir Politick is doing some itemizing for Peregrine:

     Sir P . Nay, sir, conceive me. It will cost me in onions, some 
          thirty livres—
     Per . Which is one pound sterling.
     Sir P . Beside my water-works: for this I do, sir 
          First, I bring in your ship ‘twixt two brick walls; 
          But those the state shall venture: On the one