Davis's Manual of Magnetism: Including Also Electro-magnetism, Magneto-electricity, and Thermo-electricity. With a Description of the Electrotype Process. For the Use of Students and Literary Institutions. With 100 Original Illustrations
Daniel Davis, jr., magnetical instrument maker, No. 11 Cornhill., 1842 - Electromagnetism - 217 pages
"The book contains a full description of the electrotype process, critical to many subsequent photomechanical patents and methods...The electrotype process was important in photomechanical printing in that it was first used to copy daguerreotypes and was also used in experiments as a printing surface. Eventually Paul Pretsch used it with his photo-galvano-graphic process, and it was used continuously thereafter as a device to duplicate surfaces for printing in practically all the relief processes and some intaglio."--Hanson Collection catalog, p. 8.
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acid antimony arch arrangement axis bar magnet bar of iron battery current binding screw cups bismuth blue vitriol breakpiece conductor connected Contact Breaker copper copper wire current flows current of electricity cylinder deflected deposit described dipping needle Double Helix earth effect electrical current electro-magnet Electrotome electrotype employed extremities fixed flat spiral galvanic battery galvanic current galvanometer German silver heat horizontal increased influence instrument insulated intensity iron bar iron wires junction length Leyden jar magnetic needle magnetic pole magneto-electric mercury metal motion mould north pole obtained opposite direction Page's Revolving pair of plates pass placed polarity pole-changer produced quantity rasp repelled represented in fig reversed revolution Revolving Armature right angles ring rotate secondary current sewing needle shown side soft iron soldered solution south pole steel magnet surface tertiary thermo-electric tion tricity tube upper vibrate vibrating wire wire coil zinc plate