The young medium, however, should beware against striving too hard to be the instrument of the phenomena of spirit impersonation. For a too intense anxiety, and desire to please sitters, frequently tends to produce a cloudy mental state in which the ideas in the mind of the medium blend with the spirit communication, and thus produces a most unsatisfactory result, and one which is apt to confuse the minds of the sitters and sometimes actual arouse suspicion that the medium is trying to practice deception. For this reason the young medium should not seek the attendance of persons desiring "test seances;" at least, such should be his course until he has learned not to be carried away with his desire to please or to satisfy such persons attending his circles. He should endeavor to cultivate a mental condition of calmness, and a determination not to influence or to interfere with the spirit communications in any way whatsoever, but, instead, to allow himself to become a passive instrument for the communication. The medium should remember that he is not a dealer in merchandise "warranted to please," but is, instead, a medium of communication between the spirit and those still in earth-life. Demand Proof of Spirit Identity. A certain degree of care and caution, and the employment of honest powers of discrimination, is necessary on the part of the sitters in cases of spirit impersonation. This not because of any lack of honesty on the part of the medium, but because of the habit of a mischievous class of dwellers on the planes of spirit life to falsely impersonate other spirits as such seances. As all investigators of the subject know very well, it is not an infrequent thing for such mischievous and meddlesome spirits to endeavor to pass themselves off as the relative or friends of those in the circle, or even to falsely impersonate some great historical personages. In such cases the sitters should insist upon the spirit positively identifying himself, just as they would in case of doubt regarding a person speaking to them over the telephone and claiming to be such-and-such a person. And the proof demanded should be similar to that which would be sought from the suspected telephone talker. An honest spirit communicator does not object to such demands, and is only too ready to do his best to furnish the right kind of proofs concerning his identity. The "Trance Condition."