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are taken from us, and the proportions, as of a cathedral, are grander than those to which we are accustomed. The incomplete state in which the work still remains here reveals the fact, that size, form, direction, are to the eye solely matters of judgment.

The eye may also be deceived. The fans of a windmill may seem to revolve in a direction opposite to the real one. We explain this as an error of the accompanying judgments, induced by an unfavorable position. The same form of error occasionally occurs in touch. The fingers being crossed, and the hand placed behind its possessor, he is often not able to decide which one has been touched. The ordinary accuracy of judgment is lost on account of the unusual conditions under which it is exercised. The vast majority of our localizing power being manifestly of an acquired and experimental character, we are inductively led to the conclusion, that all of it is of this nature; and the more so when we find that the most steadfast and stubborn conclusions are occasionally at fault, when formed under changed conditions of judgment. The patient whose limb was to be removed, returning to a state of consciousness, can only determine by observation, whether it has been amputated. Indeed his sensations may lead him, through the accustomed reference of pain to the accustomed quarters, to feel the limb in its place, and this though weeks may have elapsed since it was lopped from the body.

Touch is the sense whose localizing power is regarded as the most immediate, while its acquisition of this facility is most concealed from us by remoteness "of time. The dependence of this sense, in common with others, on experience for its localizing power, is seen in the fact, that on the finger-ends, where it exists most perfectly and in most constant use, we distinguish much more completely and accurately than on other parts of the body. A considerable