6. The first case, says Cervantes, requiring Sancho's attention was a question put by a stranger, in presence of the stewards and rest of the attendants. 'My Lord,' said he, 'a certain manor is divided by a large river. I beg your honour will be attentive, for the case is of great consequence and of some difficulty. I say then, upon this river is a bridge, and at one end of it the gibbet, together with a sort of court hall, in which four judges usually sit to execute the law enacted by the lord of the river, bridge, and manor, which runs to this effect: Whoever shall pass this bridge, must first swear whence he comes and whither he goes; if he swear the truth he shall be allowed to pass, but if he forswear himself he shall die upon the gallows without mercy or respite. This law, together with the rigorous penalty, being known, numbers passed, and as it appeared they swore nothing but the truth, the judges permitted them to pass freely and without control. It happened, however, that one man's oath being taken, he affirmed and swore by his deposition that he was going to be hanged on that gibbet, and had no other errand or intention. The judges, having considered this oath, observed: if we allow this man to pass freely, he swore to a lie, and, therefore, ought to be hanged according to law; and if we ordered him to be hanged after he hath sworn he was going to be suspended on that gibbet, he will have sworn the truth, and by the same law he ought to be acquitted, I beg, therefore, to know, my lord governor [and student], what the judges must do with this man?' CHAPTER XVI. TECHNICAL TERMS. Abstract names--the names of attributes.--J. S. Mill. Abstraction--fixing thought on the point of resemblance in one body.--drawing off and contemplating separately any part of an an object. Action--a volition followed by an effect.--J. S. Mill. Analogy--resemblance of relation.--Whately. Analysis--the resolution of a complex whole into its component elements. --J. S. Mill. Argument--an expression in which, from something laid down as granted, something else is deduced--Whately. Argumentum ad hominem--appealing to an opponent's professed views. A priori--reasoning from cause to effect. A posteriori--arguing from effects to cause. Body--the unknown cause of our sensations--J. S. Mill. Cause--the invariable antecedent, or thing going before.--the stimulus of an effect. Conclusion--a proposition proved by argument. Connotative terms--denote a subject, and imply an attribute.---. J.S. Mill. Consciousness--sensation of existences. Definition--the separation of a thing, as by a boundary, from everything else. Discovery--finding out something already existing. Effect--the immediate, invariable consequent, or the change produced by power. ENTHYMEME-An argument with one premiss suppressed being understood. Experience--events which have taken place within a person's own knowledge.--Whately. Fallacy--an apparent argument.