"She had as yet acquired, by the use of her sight, but very little knowledge of any forms, and was unable to apply the information gained by this new sense, and to compare it with what she had been accustomed to acquire by her sense of touch. When, therefore, a silver pencil-case and a large key were given her to examine with her hands, she discriminated and knew each distinctly; but when they were placed on the table, side by side, though she distinguished each with her eye, yet she could not tell which was the pencil-case and which was the key. "On the twenty-fifth day after the operation she drove in a carriage for an hour in the Regent's Park, and asked more questions, on her way there, than usual, about the objects surrounding her, such as, 'What is that?' 'It is a soldier,' she was answered. 'And that? See, see!' These were candles of various colors in a tallow-chandler's window. 'Who is that that has passed us just now?' It was a person on horseback. 'But what is that on the pavement, red?' It was some ladies who wore red shawls. On going into the park she was asked if she could guess what any of the objects were. 'Oh, yes,' she replied, 'there is the sky; that is the grass; yonder is water, and two white things,' which were two swans. "When she left London, forty-two days after the operation, she had acquired a pretty accurate notion of colors and their different shades and names. She had not yet acquired anything like an accurate knowledge of distance or of forms, and, up to this period, she continued to be very much confused with every new object at which she looked. Neither was she yet able, without considerable difficulty and numerous fruitless trials, to direct her eye to an object; so that, when she attempted to look at anything, she turned her head in various directions, until her eye caught the object of which it was in search." Remarks on the Sixth Case. This case has been adduced as a proof that the sense of sight is sufficient, without aid from the sense of touch, to perceive whether an object is brought nearer the eye or carried farther from it. But John Stuart Mill rightly observes, in opposition to this ("Dissertations and Discussions," ii, 113; London, 1859), that the observation we are concerned with was not made "till the eighteenth day after the operation, by which time a middle-aged woman might well have acquired the experience necessary for distinguishing so simple a phenomenon." Besides, she was very uncertain in her judgment of distances, and, in her attempts to seize with the hand new and distant objects, she frequently acted exactly like an infant. VII. THE FRANZ CASE. J. C. A. Franz, of Leipsic, communicates the following to the "Philosophical Transactions of the Royal Society" (by Sir Benjamin C. Brodie), (London, 1841; i, pp. 59-69):