“The Brain is different from all other organs of the body. It is often a mass of structural potentialities rather than of fully-developed nerve tissues. Some of its elements, viz., those concerned with best-established instinctive operations, naturally go on to their full development without the aid of extrinsic stimuli; others, however, and large tracts of these, seem to progress to such developments only under the influence of suitable stimuli. Hence natural aptitudes and potencies of the most subtle order may never be manifested by multitudes of persons, for want of the proper stimuli and practice capable of perfecting the development and functional activity of those regions of the brain whose action is inseparably related to the mental phenomena in question.”—Dr. H. C. Bastian (“The Brain as an Organ of Mind,” p. 374). LVIII. 1.—“_Woman’s own soul must seek and find_ ...” On women of medical education especially is the duty incumbent to investigate the world of biological experience in woman. They may not sit quietly down and assume that in learning all that man has to teach, they rest his equals, and that the last word has been said on the matter. They have a field of exploration, with opportunities, with implements, and with capacities, which man cannot have. His research on such a question as the recognisedly most vital one of human embryology with all its issues, can get but rare and uncertain light from accidental occasions, and is, moreover, simply as it were a dead anatomising; nor can he by any means reach the psychic or introspective phase of enquiry; but woman has the live subject, body and soul, in her own organism, to study at her leisure. Does she not yet see how to grasp such further living knowledge? But that is the very quest here indicated. The askidian also had no strength of vision, yet we can now tell and test the light and the components of distant spheres. There are, undoubtedly, what may be termed intelligent operations carried on in the body unconsciously to oneself, or at any rate beyond the present ken of one’s actively perceptive and volitional faculties. Observation and recognition of these is to be striven for, and even guidance or command of them may be ours in a worthy future. The _Times_ of 27th January, 1892, reported a lecture at the Royal Institution on the previous day by Professor Victor Horsley, in the course of which the lecturer—