London: Arthur Pearson, 1897. First edition with all the correct points. A scientist invents a way to change a body's refractive index to that of air, rendering himself invisible but is unable to reverse the process. Red cloth stamped in gilt on front and spine and with black-stamped illustration on front. Pages darkened as usually seen, more so on endpapers; small chip to front endpaper fore edge, pastedowns lightly foxed and spine considerably sunned but binding tight and corners still crisp; altogether about very good.