Published by DELATOUCHE & CO., Manufacturers of Pure Photographic Chemicals, Apparatus, Prepared Papers, and every Article connected with Photography on Paper or Glass. * * * * * ROSS'S PHOTOGRAPHIC PORTRAIT AND LANDSCAPE LENSES.--These lenses give correct definition at the centre and margin of the picture, and have their visual and chemical acting foci coincident. _Great Exhibition Jurors' Report_, p. 274. "Mr. Ross prepares lenses for Portraiture having the greatest intensity yet produced, by procuring the coincidence of the chemical actinic and visual rays. The spherical aberration is also very carefully correct, both in the central and oblique pencils." "Mr. Ross has exhibited the best Camera in the Exhibition. It is furnished with a double achromatic object-lens, about three inches aperture. There is no stop, the field is flat, and the image very perfect up to the edge." A. R. invites those interested in the art to inspect the large Photographs of Vienna, produced by his Lenses and Apparatus. Catalogues sent upon Application. A. ROSS, 2. Featherstone Buildings, High Holborn. * * * * * VOLUME I. OF THE RE-ISSUE OF LIVES OF THE QUEENS OF ENGLAND, By AGNES STRICKLAND, Comprising all the recent Important Additions, PORTRAITS of all the QUEENS, &c., IS PUBLISHED THIS DAY, To be completed in eight Monthly Volumes 8vo., price 10s. 6d. each, handsomely bound. Published for HENRY COLBURN, by his successors, HURST & BLACKETT, 13. Great Marlborough Street. * * * * * Just published, 1 vol. 8vo., price 9s. ANCIENT IRISH MINSTRELSY, by REV. W. HAMILTON DRUMMOND, D.D., M.R.S.A. "A graceful addition to the lover of Ancient Minstrelsy, whether he be Irishman or not. A man need not be English to enjoy the Chevy Chace, nor Scotch to value the Border Minstrelsy. The extracts we have given from Dr. Drummond's work, so full of force and beauty, will satisfy him, we trust, he need not be Irish to enjoy the fruits of Dr. D.'s labours."--_The Dublin Advocate._ Dublin: HODGES & SMITH, Grafton Street. London: SIMPKIN, MARSHALL, & CO., 4. Stationers' Hall Court. * * * * * PHOTOGRAPHIC PICTURES.--A Selection of the above beautiful Productions may be seen at BLAND & LONG'S, 153. Fleet Street, where may also be procured Apparatus of every Description, and pure Chemicals for the practice of Photography in all its Branches. Calotype, Daguerreotype, and Glass Pictures for the Stereoscope. BLAND & LONG, Opticians, Philosophical and Photographical Instrument Makers, and Operative Chemists, 153. Fleet Street. * * * * *