The room in which the sitting takes place should be moderately warm, shady, and lit by a diffused light, such as may be obtained by a light holland blind or casement cloth, in the daytime. The subject should sit with his back to the source of light, and the illumination will be adequate if ordinary print can be read by it.
It is important that all persons sitting in the same room with the seer should be at least at arm's length from him.
Silence should be uniformly observed by those present, until the vision is attained.
It will then be found convenient to have two persons present to act as Interrogator and Recorder respectively.
The Interrogator should be the only person whose voice is heard, and it should be reduced to a soft but distinct monotone. The Recorder will be occupied in setting down in writing all questions asked by the Interrogator and the exact answers made by the seer. These should be dated and signed by those present when completed. It is perhaps hardly necessary to remark that precautions should be taken to prevent sudden intrusions, and as far as possible to secure general quiet without.
I may here interject an observation which appears to me suggestive and may prove valuable. It has been observed that the inhabitants of basaltic localities are more generally natural clairvoyants than others. Basalt is an igneous rock composed largely of augite and felspar, which are silicate crystals of calcium, potassium, alumina, etc., of which the Moonstone is a variety. The connecting link is that clairvoyance is found to be unusually active during and by means of moonlight. What psycho-physical effect either basalt or moonlight has upon the nervous system of impressible subjects appears to be somewhat obscure, but there is little difference between calcium light and moonlight, except that the latter is moderated by the greater atmosphere through which it comes to us. It is only when we come to know the psychological values of various chemical bodies that we can hope for a solution of many strange phenomena connected with the clairvoyant faculty. I recollect that the seeress of Prevorst experienced positive pain from the near presence of water during her abnormal phases. Reichenbach found certain psycho-pathological conditions to be excited by various metals and foreign bodies when brought into contact with the sensitive. These observations are extremely useful if only in producing an awareness of possible reasons for such disturbance as may occur in the conditions already cited.
At the outset the sittings should not last longer than at most half-an-hour, but it is important that they should be regular, both as to time and place. We are already informed from a number of observations that every action tends to repeat itself under similar conditions. Habits of life and mind are thus formed so that in time they become quite involuntary and automatic. A cumulative effect is obtained by attention to this matter of periodicity, while the use of the same place for the same purpose tends to dispose the mind to the performance of particular functions. In striving for psychic development of any sort we shall do well not to disregard these facts. For since all actions tend to repeat themselves and to become automatic, to pass from the domain of the purposive into the habitual, the psychic faculties will similarly, if actuated at any set time and place, tend to bestir themselves to the same effects as those to which they were first moved by the conscious will and intention of the seer. Until the clairvoyant faculty is fully assured and satisfactory results obtained without any inconvenience to the seer, not more than two persons should be present at the sittings. These should be in close sympathy with the seer and with each other.
When the sitting is over it will be found useful to repair to another place and fully discuss the results obtained, the impressions and feelings of the seer during the seance, and matters which appear to have a bearing on the facts observed.
A person should not be disheartened if at the first few sittings nothing of any moment takes place, but should persevere with patience and self-control. Indeed, if we consider the fact that for hundreds of generations the psychic faculties latent in man have lain in absolute neglect, that perhaps the faculty of clear vision has not been brought into activity by any of our ancestors since remote ages, it should not be thought remarkable that so few find the faculty in them to be practically dormant. It should rather be a matter of surprise that the faculty is still with us, that it is not wholly irresponsive to the behests of the soul. While in the course of physical evolution many important functions have undergone remarkable changes, and organs, once active and useful, have become stunted, impotent, and in some cases extinct, yet on the other hand we see that seeds which have lain dormant in arid soil for hundreds of years can spring into leaf and flower under the influence of a suitable climate.
The vermiform appendix, so necessary to the bone eaters of a carnivorous age, has no part in the physical economy of a later and more highly-evolved generation. The pineal gland and the pituitary body are adjuncts of the brain whose functions have long been in latency. The Anastatica hierochuntica, commonly called the Rose of Jericho, is a wonderful example of functional latency. The plant will remain for ages rolled up like a ball of sun-dried heather, but if placed in water it will immediately open out and spread forth its nest of mossy green fronds, the transition from seeming death to life taking place in a few minutes. The hygrometric properties of the plant are certainly exceptional. They illustrate the responsiveness of certain natures to a particular order of stimulus, and in a sense they illustrate the functions of the human soul. The faculty of direct vision is like the latent life of the vegetable world. It waits only the conditions which favour its activity and development, and though for generations it may have lain dormant, yet in a few days or weeks it may attain the proportions of a beautiful flower, a thing of wonder and delight, gracing the Garden of the Soul.