We have seen that in each cell in the human body is embodied a part of the Subconscious Mind, sufficient in quantity and quality to enable the cell to perform its particular work in the physical community of cells. In the same manner each group of cells, large or small, is possessed of the quantity and quality of mind adapted to the successful performance of its particular function. And, rising in the scale, we find that each of the physical organs is possessed of a "composite cell-soul" or "organ-mind." As Hudson says: "Each organ of the body is composed of a group of cells which are differentiated with special reference to the functions to be performed by that organ. In other words, every function of life is performed by groups of co-operative cells, so that the body as a whole is simply a confederation of the various groups." For instance, as Haeckel says: "This 'tissue soul' is the higher psychological function which gives physiological individuality to the compound multicellular organism as a true 'cell commonwealth.' It controls all the separate 'cell souls' of the social cells--the mutually dependent 'citizens' which constitute the community.... The human egg-cell, as soon as it is fertilized, multiplies by division and forms a community, or colony of many social cells. These differentiate themselves, and by their specialization, by various modifications of these cells, the various tissues which compose the various organs are developed. The developed many-celled organisms of man and of all higher animals resemble, therefore, a social civil community, the numerous single individuals of which are, indeed, developed in various ways, but which were originally only simple cells of one common structure." Biology shows us that there are unquestionably methods of communication between cell and cell, although it has not as yet been definitely determined just how this communication is effected. In the cell-communities of the micro-organisms there is undoubtedly present the power to communicate on the part of the several cells composing the community, and the pain or discomfort of one part is evidently felt by the whole community. Just as an army, or a congregation, has a mind common to the whole, in addition to the individual minds of its units, so has every organ of the body an "organ mind" in addition to the individual cell minds of its unit cells. The fact of the existence of "group-mind," or "collective-mind" is recognized by the best authorities in modern psychology, and the study of its principles throws light on some hitherto perplexing phenomena.