to be equally diminished. Beyond the limits of what he saw he had no conception of any thing. He knew that the apartment he occupied was only a part of the house, and yet he could not imagine how the latter should be larger than the former. Before the operation he formed no great expectations of the pleasure he should receive from the new sense he was promised, excepting that thereby he might be enabled to read and write. He said among other things, that he could enjoy no greater delight from walking in the garden, because there he already walked at his ease, and was acquainted with every part of it. He also remarked that his blindness gave him one advantage over the rest of mankind, namely, that of being able to walk in the night with more confidence and security. No sooner, however, had he began to enjoy his new sense than he was transported beyond measure; he declared that every new object was a new source of delight, and that his pleasure was so great he had not language to express it. About a year after, he was carried to Epsom, where there is a beautiful and extensive prospect; with this he seemed greatly charmed; and the landscape before him he called a new method of seeing. He was couched in the other eye a year after the former, and the success was equally great. Every object appeared larger when he looked at it with the second eye to what it did with the other; and when he looked at any thing with both eyes it appeared twice as large as when he saw but with one, though he did not see double, or at least he shewed no marks from which any such conclusion might be drawn. Mr. Chesselden instances several other persons who were in the same situation with this lad, and on whom he performed the same operation; and he assures us, that on first obtaining the use of their eyes they expressed their perceptions in the same manner, though less minutely; and that he particularly observed of them all, that as they had never had any occasion to move their eyes while deprived of sight, they were exceedingly embarrassed in learning how to direct them to the objects they wished to observe. As from particular circumstances we cannot from a just idea of distance, and as we cannot judge of the magnitude of objects but by the largeness of the angle, or rather the image, which they form in our eyes, we are necessarily deceived as to the size of such objects. Every man knows how liable we are, in travelling by night, to mistake a bush which is at hand for a tree at a distance, or a tree at a distance for a bush which is at hand. In like manner, if we cannot distinguish objects by their figure we cannot judge of distance or size. In this case a fly, passing with rapidity before our eyes, will appear to be a bird at a considerable distance; and an horse standing in the middle of a plain will appear no bigger than a sheep till we have discovered that it is a horse, and then we shall recognize it to be as large as life.