Now every series whose exponent (whether that of the categorical or the hy pothetical judgment) is given may be continued; hence the very same action of reason leads to a ratiocinatio prosyllogistica, a which is a series of inferences, that can be continued to an indeterminate extent either on the side of the conditions (per prosyllogismos)b or on the side of the con ditioned (per episyllogismos).c