 The tract on relatives continues with a brief discussion on the relatives of diversity, accompanied by a rule about the supposition of the relative when it is added to a superior and an inferior in a premiss and a conclusion, as in aliud ab animali; ergo aliud ab homine (‘Something other than an animal; therefore something other than a man’). With regard to relatives of identity a rule of the “ancients”, who deny that a proposition introduced by a relative can have a contradictory opposite, is discussed and rejected. Another rule is given about the identity of supposition of a non-reciprocal relative and what it refers to. The tract concludes with short accounts of relatives of accident.