4.--When an Expectancy Circle has had several successful sittings and has established communications with spirits, those latter should be asked to collect together a group of beings “on the other side” who are willing to co-operate actively with the Circle by regular attendance and the production of manifestations on a continually-developing scale. In past times there has been by far too little of such co-operation. Each professional medium has had his or her alleged “controls,” who in an incidental way have occasionally introduced spirits, while the sitters have also--without any design of so doing--brought disembodied souls to the _séances_. And sittings--especially of the “table” kind--have taken place in private homes where the enquirers have usually been restricted to a few members of a single family, and where the spirits communicated with have been recently-deceased relatives and other inexperienced beings. Under such circumstances it is surprising that so much progress has been made. It is found, however, that spirits are just as “keen” and interested in psychical phenomena and the extension of communication across the border-line as are the Crookeses, Lodges, Barretts, Crawfords and other investigators in the ranks of the living. It is not difficult for an Expectancy Circle of sitters to develop into a Progressive Circle of co-operating sitters and spirits. A request for co-operation is usually complied with, and it almost always happens that the spirits who are asked to act succeed very quickly in finding others to assist, some of whom have had much experience in manifesting and communicating and can instruct their human colleagues how best to operate. What is chiefly necessary on the part of the sitters in order to ensure results of the highest type is to work in a systematic and co-ordinated way; and the manner in which this may be most effectually done is by each human member of a Progressive Circle entering into relations with some specific spirit-members and undertaking some distinct line of conversation and enquiry by whatever method may be most convenient and practicable--_e.g._ by automatic or direct writing, by signalling, by clairvoyance, etc. These duologues, or--where more than one sitter and one spirit are concerned--these Committee Meetings may be held at any time and place found fitting, and should be carefully recorded for report to the regular sittings of the Progressive Circle, when the various reports are considered and compared together and are made the starting-point for additional conversations and enquiries. * * * * *