When an Adept or pupil finds it necessary for any purpose to materialize his mental or astral vehicle, he does not draw upon either his own etheric double or any one else’s, since he has been taught how to extract the matter which he requires directly from the surrounding ether. Another phenomenon closely connected with this part of the subject is that of reduplication, which is produced by simpjy forming a perfect mental Re fion!' ca image of the object to be copied, and then gathering about that mtiuld the necessary astral and physical matter. Of course for this purpose it is necessary that cypry particle, interior as well as exterior, of the object to 5 e duplicated should be held accurately in view simultaneously, an^l consequently the phenomenon is one which requires considerable power of concentration to perform. Persons unable to extract the matter required directly .from the surrouncliifg ether have sometimes borrowed it from the material of the original article, which in this case would be correspondingly reduced in weight. AVe read a good deal in Thcosophical literature about the precipitation of letters or pictures. This result, like everything