general terms, is the explanation of the perception of matter which psychology proposes. Psychology and metaphysics are thus radically opposed to each other in their solutions of the highest problem of speculation. Stated concisely, the difference between them is this:--psychology regards the perception of matter as susceptible of analytic treatment, and travels, or endeavours to travel, beyond the given fact: metaphysic stops short in the given fact, and there makes a stand, declaring it to be all indissoluble unity. Psychology holds her analysis to be an analysi