‘In Mr. Bonney’s useful book every part of the coil is described minutely in detail, and the methods and materials required in insulating and winding the wire are fully considered.’—_Electrical Review._ By G. E. BONNEY. =THE ELECTRO-PLATER’S HANDBOOK.= A Practical Manual for Amateurs and Young Students in Electro-Metallurgy. With Full Index and 61 Illustrations. Second Edition, Revised and Enlarged, with an Appendix on ELECTROTYPING. 3_s._ ‘An Amateur could not wish for a better exposition of the elements of the subject.’—_Electrical Review._ By H. ORFORD. =LENS WORK FOR AMATEURS.= With numerous Illustrations. Small crown 8vo. 3_s._ ‘The book is a trustworthy guide to the manufacturer of lenses, suitable alike for the amateur and the young workman.’—_Nature._ =MODERN OPTICAL INSTRUMENTS.= By the same Author. 2_s._ 6_d._ By the late J. TRAILL TAYLOR, Editor of the _British Journal of Photography_. =THE OPTICS OF PHOTOGRAPHY AND PHOTOGRAPHIC LENSES.= With 68 Illustrations. 3_s._ 6_d._ ‘Personally we look upon this book as a most valuable labour-saving invention, for no questions are so frequent, or take so long to answer, as those about lenses.’—_Practical Photographer._ By JOSEPH POOLE, A.I.E.E. (Wh. Sc. 1875), Chief Electrician to the New Telephone Company, Manchester. =THE PRACTICAL TELEPHONE HANDBOOK.= With 228 Illustrations. Second Edition. Revised and considerably Enlarged. 5_s._ ‘This essentially practical book is published at an opportune moment. It contains readable accounts of all the best-known and most widely used instruments, together with a considerable amount of information not hitherto published in book form.’—_Electrician._ By SYDNEY F. WALKER, M.I.E.E., A.M.Inst.C.E. =ELECTRICITY IN OUR HOMES AND WORKSHOPS.= A Practical Treatise on Auxiliary Electrical Apparatus. Third Edition. Revised and Enlarged. With 143 Illustrations. 6_s._ ‘It would be difficult to find a more painstaking writer when he is describing the conditions of practical success in a field which he has himself thoroughly explored.’—_Electrician._ By D. DENNING. =THE ART AND CRAFT OF CABINET MAKING.= A Practical Handbook to the Construction of Cabinet Furniture, the Use of Tools, Formation of Joints, Hints on Designing and Setting Out Work, Veneering, etc. With 219 Illustrations. 5_s._ ‘A carefully-considered and well-written book.’—_Work._ By F. C. ALLSOPP, Author of ‘The Telephones and their Construction.’ =PRACTICAL ELECTRIC-LIGHT FITTING.= A Treatise on the Wiring and Fitting-up of Buildings deriving current from Central Station Mains, and the Laying down of Private Installations, including the latest edition of the Phœnix Fire Office Rules. With 224 Illustrations. Second Edition, revised, 5_s._