Mr. Thomas Slater, an old-established optician in the Euston Road, and an amateur photographer, took with him to Mr. Hudson’s a new camera of his own manufacture and his own glasses, saw everything done, and obtained a portrait with a second figure on it. He then began experimenting in his own private house, and during last summer obtained some remarkable results. The first of his successes contains two heads by the side of a portrait of his sister. One of these heads is unmistakably the late Lord Brougham’s; the other, much less distinct, is recognized by Mr. Slater as that of Robert Owen, whom he knew intimately up to the time of his death. He has since obtained several excellent pictures of the same class. One in particular shows a female in black and white flowing robes, standing by the side of Mr. Slater. In another the head and bust appears, leaning over his shoulder. The faces of these two are much alike, and other members of the family recognize them as likenesses of Mr. Slater’s mother, who died when he was an infant. In another a pretty child-figure, also draped, stands beside Mr. Slater’s little boy. Now, whether these figures are correctly identified or not, is not the essential point. The fact that _any_ figures, so clear and unmistakably human in appearance as these, should appear on plates taken in his own private studio by an experienced optician and amateur photographer, who makes all his apparatus himself, and with no one present but the members of his own family, is the real marvel. In one case a second figure appeared on a plate with himself, taken by Mr. Slater when he was absolutely alone—by the simple process of occupying the sitter’s chair after uncapping the camera. He and his family being themselves mediums, they require no extraneous assistance; and this may perhaps be the reason why he has succeeded so well. One of the most extraordinary pictures obtained by Mr. Slater is a full-length portrait of his sister, in which there is no second figure, but the sitter appears covered all over with a kind of transparent lace drapery, which on examination is seen to be wholly made up of shaded circles of different sizes, quite unlike any material fabric I have seen or heard of. Mr. Slater has himself shown me all these pictures and explained the conditions under which they were produced. That they are not impostures is certain; and as the first independent confirmations of what had been previously obtained only through professional photographers, their value is inestimable.