was still working blindfold as it were, in past years, not belonged to that class of scientists "who only see what they want to see, and who array facts and figures adroitly on the side of preconceived opinion." Since the last meeting of the British Association, Keely, in writing of some of the addresses delivered, says: "It delights me to find that physicists are verging rapidly toward a region which, when they reach, will enable them to declare to the scientific world what they now deny; viz., that immense volumes of energy exist in all conditions of corpuscular spaces. My demonstrations of this truth have been ignored by them and now they must find it out for themselves. I do not doubt that they will reach it in their own way. I accept Professor Stoney's idea that an apsidal motion might be caused by an interaction between high and low tenuous matter; but such conditions, even of the highest accelerated motion, are too far down below the etheric realm to influence it sympathetically, even in the most remote way. I mean by this that no corpuscular action, nor interaction can disturb or change the character of etheric vibrations. The conception of the molecule disturbing the ether, by electrical discharges from its parts, is not correct; as the highest conditions associated with electricity come under the fourth descending order of sympathetic condensation, and consequently its corpuscular realm is too remote to take any part towards etheric disturbance. Hypothesis is one thing and actual experimental demonstration is another; one being as remote from the other as the electrical discharges from the recesses of the molecule are from the tenuous condition of the universal ether. The conjecture as regards the motion being a series of harmonic elliptic ones, accompanied by a slow apsidal one, I believe to be correct.... The combination of these motions would necessarily produce two circular motions of different amplitudes whose differing periods might correspond to two lines of the spectrum, as conjectured, and lead the experimenter, perhaps, into a position corresponding to an ocular illusion. Every line of the spectrum, I think, consists not of two close lines, but of compound triple lines: though not until an instrument has been constructed, which is as perfect in its parts as is the sympathetic field that environs matter, can any truthful conclusion be arrived at from demonstration."