Question I: What exchange is, and of how many kinds

Cambium IS DEFINED: It is an exchange of different moneys: Or an exchange of money for money.

CAMBIUM is twofold, one Real, one Dry. The Real, which is called true Cambium, is a legitimate exchange of money for money: But the Dry is that which is not true Cambium, but covered with the cloak of a loan, and true usury, because merely on account of the delay of time, or an expected payment, or when it is feigned that the payment is to be made elsewhere, and it is made in the same place, something is received beyond the principal, and therefore it is called Dry, and sterile for producing legitimate profit; for the distance of place, required in it for true Cambium, is converted into an expectation of payment, because the money is truly to be paid in that place in which it is received.

The real CAMBIUM is divided into Minute, and Locale: Minute is, when one gives greater moneys for lesser, or the contrary; or old coin is exchanged with new; native with foreign; golden with silver; or silver with copper.

THIS Cambium is also wont to be called Manuale, because the money being counted from hand to hand is wont to be completed at the same time and place. Locale Cambium is when present money is exchanged with absent, which is also wont to be called Cambium per litteras, because letters are wont to be sent to the place where the money is to be received or paid.