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 ness to help develop the truth, it may be necessary to proceed with more caution, and possibly to put the witness in a position where it will appear to the jury that he could tell a good deal if he wanted to, and then leave him. The jury will thus draw the inference that, had he spoken, it would have been in our favor.

But suppose the witness has testified to material facts against us, and it becomes our duty to break the force of his "testimony," or abandon all hope of a jury verdict. How shall we begin? How shall we tell whether the witness has made an honest mistake, or has committed perjury? The methods in his cross-examination in the two instances would naturally be very different. There is a marked distinction between discrediting the testimony and discrediting the witness. It is largely a matter of instinct on the part of the examiner. Some people call it the language of the eye, or the tone of the voice, or the countenance of the witness, or his manner of testifying, or all combined, that betrays the wilful perjurer. It is difficult to say exactly what it is, excepting that constant practice seems to enable a trial lawyer to form a fairly accurate judgment on this point. A skilful cross-examiner seldom takes his eye from an important witness while he is being examined by his adversary. Every expression of his face, especially his mouth, even every movement of his hands, his manner of expressing himself, his whole bearing—all help the examiner to arrive at an accurate estimate of his integrity.