[Illustration] DIRECTIONS FOR INSERTING A SPARE MICA-FOIL.—Undo the Contact Screws, lift the Contact Pieces and place Foil fairly under, and screw down, taking care not to jam the Mica on to the Foil, which should be loose, so as to allow for expansion. _Certificate from the Vienna Exhibition, which was protected throughout by “Hedges’ Patent Fuses.”_ [TRANSLATION.] THE PATENT HEDGES’ CUT-OUTS have found a useful sphere of employment in the labours of the Technical Scientific Commission, and their construction has proved itself most admirably adapted to the ends in view. The President of the Technical Scientific Commission, VIENNA, _13th May, 1884_. (_Signed_) F. STEFAN. W. T. GOOLDEN & CO., Electrical Engineers, _Contractors to Her Majesty’s Government and the Principal Railway Companies._ Sole Manufacturers of the Connaught (Kapp’s Patent) Alternating Current Dynamo and Transformers; GOOLDEN-RAVENSHAW CONTINUOUS CURRENT DYNAMO; Electric Motors for all purposes; MEASURING INSTRUMENTS; CARDEW VOLTMETERS (The only Reliable Instruments for Alternating Currents); Evershed Patent Gravity Voltmeters and Ammeters (Not affected by the proximity of dynamos). Complete Estimates furnished for Central-Stations, Plant for Alternating and Direct Currents, or for Batteries, Engines, Boilers, etc., by the Best Makers only, and of the most economical types. ALL PLANTS SUPPLIED CAN BE TESTED AT OUR OWN WORKS. _Offices and Works_: WOODFIELD ROAD, WESTBOURNE PARK, LONDON, W. End of the Project Gutenberg EBook of Central-Station Electric Lighting, by Killingworth Hedges