=ELECTRIC BELLS AND ALARMS.= How to install them. By N. H. SCHNEIDER. Including batteries, wire and wiring, circuits, pushes, bells, burglar alarms, high and low water alarms, fire alarms, thermostats, annunciators, and the locating and remedying of faults. With 56 original diagrams. =MODERN PRIMARY BATTERIES.= Their construction, use and maintenance, including batteries for telephones, telegraphs, motors, electric lights, induction coils, and for all experimental work. By N. H. SCHNEIDER. 94 pages, 55 illustrations. The best and latest American book on the subject. =EXPERIMENTING WITH INDUCTION COILS.= H. S. NORRIE, author of "Induction Coils and Coil Making." A most instructive little book, full of practical and interesting experiments, fully explained in plain language with numerous hints and suggestions for evening entertainments. Arranged under the following headings: Introduction; The Handling of Ruhmkorff Coil; Experiments with Sparks; Effects in the Vacuum; Induction and Wireless Telegraphy. With 36 original illustrations. [In the press] =SMALL ACCUMULATORS.= How made and used, by P. MARSHALL. Giving full descriptions how to make all the parts; assemble them, charge the cells and run them, with examples of their practical application. Useful receipts and memoranda and a glossary of technical terms. 80 pages, 40 illustrations, paper. = ELECTRIC GAS LIGHTING.= How to install Electric gas igniting apparatus including the jump spark and multiple systems for all purposes. Also the care and selection of suitable batteries, wiring and repairs, by H. S. NORRIE. 101 pages, 57 illustrations, paper. =SIMPLE ELECTRICAL WORKING MODELS.= How to make them and how to use them. With 43 illustrations. =TELEPHONES AND MICROPHONES.= Making and using simple forms of telephones and microphones, with 29 illustrations. =SMALL ELECTRIC MOTORS.= How to make and use them, including design, examples of small motors, and their applications, speed controllers, starters, fuses, etc. 48 illustrations. =ELECTRIC LIGHTING= for amateurs. The installation of electric light on a small scale, construction of lamps and lamp holders, switches, batteries and their connections. With 45 illustrations. =INDUCTION COILS.= A practical handbook on the construction and use of shock and spark coils. With 35 illustrations. =X-RAYS SIMPLY EXPLAINED.= The theory and practical application of Radiography. 10 illustrations and 6 plates. =STATIC ELECTRICITY.= Simple experiments in. A series of instructive and entertaining electrical experiments with simple and inexpensive apparatus. With 51 illustrations. =SIMPLE SCIENTIFIC EXPERIMENTS.= How to perform entertaining and instructive experiments with simple home-made apparatus. With 59 Illustrations. =SMALL ELECTRICAL MEASURING INSTRUMENTS=, describing the making and using of the different instruments fully illustrated.