BOOK VARNISH (ROWBOTHAM'S).--This truly wonderful Varnish for restoring Old Bindings, and giving them a freshness equal to new, is applied with a piece of sponge, and dries instantly. (See "N. & Q.," Vol. vi., p. 335.) May be had of J. ROWBOTHAM, India-Rubber Bookbinder, 70. Castle Street, two doors east of Berners Street, Oxford Street, in Bottles 1s. each, or by Order of any Bookseller or Druggist. A List of Prices for India-rubber Bookbinding may be had on application. * * * * * Price 2s. 6d., cloth lettered, SANITARY ECONOMY: its Principles and Practice; and its Moral Influence on the Progress of Civilisation. W. & R. CHAMBERS, 3. Bride Court Passage, Fleet Street, London, and 339. High Street, Edinburgh; and sold by all Booksellers. * * * * * SPECTACLES.--Every Description of SPECTACLES and EYE-GLASSES for the Assistance of Vision, adapted by means of Smee's Optometer: that being the only correct method of determining the exact focus of the Lenses required, and of preventing injury to the sight by the use of improper Glasses. BLAND & LONG, Opticians, 153. Fleet Street, London. * * * * * VIEWS IN LONDON. STEREOSCOPES AND STEREOSCOPIC PICTURES. BLAND & LONG, 153. FLEET STREET, OPTICIANS and PHILOSOPHICAL INSTRUMENT MAKERS, invite attentions to their Stock of STEREOSCOPES of all Kinds, and in various Materials; also, to their New and Extensive Assortment of STEREOSCOPIC PICTURES for the same, in DAGUERREOTYPE, on PAPER, and TRANSPARENT ALBUMEN PICTURES on GLASS, including Views of London, Paris, the Rhine, Windsor, &c. These Pictures, for minuteness of Detail and Truth in the Representation of Natural Objects, are unrivalled. BLAND & LONG, Opticians, 153. Fleet Street, London. *** "Familiar Explanation of the Phenomena" sent on Application. * * * * * DAGUERREOTYPE MATERIALS.--Plates, Cases, Passepartoutes. Best and Cheapest. To be had in great variety at McMILLAN'S Wholesale Depot, 132. Fleet Street. Price List Gratis. * * * * * {506} Early in December, in small 4to., Elegantly Printed on Toned Paper, and appropriately bound, price 30s., AN ILLUSTRATED EDITION OF TUPPER'S PROVERBIAL PHILOSOPHY. The Designs by C. W. Cope, R.A., J. C. Horsley, R.A., John Tenniel, Edwin H. Corbould, G. Dodgson, Edward Duncan, Birket Foster, John Gilbert, J. Godwin, William Harvey, W. L. Leitch, F. R. Pickersgill, and Joseph Severn. The Ornamental Initials and Vignettes by Henry Noel Humphreys. London: THOMAS HATCHARD, 187. Piccadilly. * * * * * ILLUSTRATED PRESENT BOOKS. Just published, GRAY'S ELEGY WRITTEN IN A COUNTRY CHURCHYARD. Illustrated on every Page with Engravings on Wood from Drawings by BIRKET FOSTER, GEORGE THOMAS, and a LADY. Crown 8vo. handsomely bound in blue cloth, or in enamelled boards, price 7s. 6d.