Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb. Authorities consulted: v. 1, 5 p. preceding introduction I. Electricity; wiring; telegraph.--II. Generators; motors; storage batteries; automobiles.--III. Electricity; light; power; railways.--IV. Alternating current work; transmission.--V. Telephony.--VI. Chemistry; heat; boilers; steam pumps.--VII. Steam engines; refrigeration; gas engines.--VIII. Marine and locomotive work.--IX. P
...attern making; founding; machine design.--X. Machine shop; tool making; forging.--XI. Mechanical drawing; perspective.--XII. Vntilating; heating; plumbing; carpentry; index
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