We will now take up the matter specifically from the standpoint of sound. In the study of the Sacred Word and its use we found that it had a triple effect, destructive, constructive and personal, - if I might so express it - or acting directly in a stimulating sense on the centers of the body. These three effects may be seen in the use of all sound collectively and by a large body of persons. We might enumerate still further for the sake of clarity a fourth effect, that of the creation of a funnel. This fourth effect is but a synthesis of the others in actuality, for adjustments [193] in the matter of the three lower planes have to be made in this creation of a funnel of communication. Those adjustments result first of all in the destruction of obstructing matter, and then in the construction of a funnel for use. This is very definitely effected through the instrumentality of the centers. This latter point is of fundamental interest, and holds hid the secret of the most potent use of sound. That use is its projection in mental matter by means of one or other of the major centers. The effects achieved by a group of persons who have the power to work on mental levels, and to employ simultaneously one of the major centers (either entirely the head center or one of the other major centers in connection with its corresponding head center) can be unbelievably powerful. It is well for the race that as yet that power is not theirs. Only when united purity of motive and an unselfish adherence to the good of all can be found, will this power be permitted to return to the common knowledge of men. As yet it is practically impossible to get a sufficient number of people at the same stage of evolution, at the same point on the ladder, employing the same center and responding to the same ray vibration to meet in unison, and sound together the same note or mantram. They must also be animated by pure love, and work intelligently for the spiritual uplift of all.