62. Intelligent communications also occur by means of the fluidic action of the spirit upon the medium; the fluid of the latter must identify with the fluid of the former. The ease of the communication depends on the degree oilaffinity between the two fluids. Each medium is thus capable of receiving the impression or impulse of this or that spirit's thought to varying degrees. Such a medium may be a good instrument for one, but a bad instrument for another. The result is that even though two equally well- endowed mediums may be right next to each other, a spirit may manifest through one and not the other.
