1909. This subject is not one to be played or trifled with and a word of caution by Oxon is given to those who may propose to follow out an experimental study of mesmeric phenomena on his own responsibility. Dealing as is does with obscure conditions of the whole being, it presents various difficulties and not a few dangers to the inexperienced or rash experimenter. Harm may easily be done to the unconscious patient, and unmerited obloquy may be cast on the study of the subject by experiments ignorantly conducted. With simple knowledge and ordinary care the course is clear, and danger need not be apprehended; but delicate states of the sensitive patient do not fitly lend themselves to experiments on the part of the merely curious and uninstructed investigator.