The memory of Nature is in reality a stupendous unity, just as inanother way all mankind is found to constitute a spiritual unity if weascend to a sufficiently elevated plane of Nature in search of thewonderful convergence where unity is reached without the loss ofindividuality. For ordinary humanity, however, at the early stage of itsevolution represented at present by the majority, the interior spiritualcapacities ranging beyond those which the brain is an instrument forexpressing, are as yet too imperfectly developed to enable them to gettouch with any other records in the vast archives of Nature's memory,except those with which they have individually been in contact at theircreation. The blindfold interior effort they are competent to make, willnot, as a rule, call up any others. But in a flickering fashion we haveexperience in ordinary life of efforts that are a little more effectual."Thought Transference" is a humble example. In that case "impressions onthe mind" of one person--Nature's memory pictures, with which he is innormal relationship, are caught up by someone else who is just able,however unconscious of the method he uses--to range Nature's memoryunder favourable conditions, a little beyond the area with which he himself is in normal relationship. Such a person has begun, howeverslightly, to exercise the faculty of astral clairvoyance. That term maybe conveniently used to denote the kind of clairvoyance I am nowendeavouring to elucidate, the kind which, in some of its moremagnificent developments, has been employed to carry out theinvestigations on the basis of which the present account of Atlantis hasbeen compiled.