_PROTOSULPH._ The gilding would have been wasted. Our observations respecting blowing on the glass apply equally when the protosulphate is used. That developing solution will keep. Stains may be removed from the finger by cyanide of potassium; but this must be used cautiously, as it is very poisonous. A few complete sets of "_NOTES AND QUERIES_," _Vols. i._ to _vi._, price Three Guineas, may now be had; for which early application is desirable. "_NOTES AND QUERIES_" is published at noon on Friday, so that the Country Booksellers may receive Copies in that night's parcels, and deliver them to their Subscribers on the Saturday. * * * * * MAITLAND ON THE DARK AGES--NEW EDITION. In 8vo., price 10s. 6d., the Third Edition of THE DARK AGES; a Series of ESSAYS intended to illustrate the State of RELIGION and LITERATURE in the 9th, 10th, 11th, and 12th Centuries. By the REV. S. R. MAITLAND, F.R.S. and F.S.A., some time Librarian to the late Archbishop of Canterbury, and Keeper of the MSS. at Lambeth. RIVINGTONS. St. Paul's Church Yard, and Waterloo Place; Of whom may be had, by the same Author, 1. ESSAYS ON THE REFORMATION in ENGLAND. 13s. 2. EIGHT ESSAYS ON VARIOUS SUBJECTS (1852). 4s. 6d. 3. ERUVIN; ESSAYS on Subjects connected with the NATURE, HISTORY, and DESTINY of MAN. Second Edition. 5s. * * * * * PUTZ'S ANCIENT GEOGRAPHY AND HISTORY, BY ARNOLD AND PAUL. Now ready, in 12mo., price 6s. 6d., the Second Edition of HANDBOOK OF ANCIENT GEOGRAPHY and HISTORY. With Questions. Translated from the German of Putz, by the REV. R. B. PAUL, M.A., and edited by the late REV. THOMAS KERCHEVER ARNOLD, M.A. Also, by the same Editors, 1. HANDBOOK OF MEDIAEVAL HISTORY AND GEOGRAPHY. 4s. 6d. 2. HANDBOOK OF MODERN HISTORY AND GEOGRAPHY. 5s. 6d. "The leading characteristic of these Handbooks is their exceeding simplicity, the excellent order with which they are arranged, the completeness of their details, and the remarkable accuracy and elaborate erudition which they exhibit in every page. They have this further advantage, which it is impossible to over-estimate--that they bring down their respective subjects to the very latest period, and present us with the results of the most recent investigations of the critics and antiquaries by whom they have been discussed."--_Dublin Review._ RIVINGTONS. St. Paul's Church Yard, and Waterloo Place. * * * * * EURIPIDIS BACCHAE WITH ENGLISH NOTES. Now ready, in 12mo., price 3s. EURIPIDIS BACCHAE, with ENGLISH NOTES, from the German of SCHOeNE. By the REV. HENRY BROWNE, M.A., Canon of Waltham in the Cathedral Church, and Chaplain to the Lord Bishop of Chichester. (Forming a New Volume of ARNOLD'S SCHOOL CLASSICS.) Recently published in this Series, edited by the late REV. T. K. ARNOLD, M.A.