!! WARRENTED !!
50 sizes, from 1-2 lb. to 800 lbs.
Catalogues furnished on application.
A VALUABLE WORK. THE STEAM ENGINE The Relative Proportions of the Steam Engine. Acourse of Lectures on the Steam Engine delivered tothe students of Dynamical Engineering in the Universityof Pennsylvania. By Wm. D. Marks, WhitneyProfessor of Dynamical Engineering. With numerousIllustrations. 12mo. Flexible cloth. $1.50. "A valuable addition to the literature of the SteamEngine, and one which will be appreciated by engineersin practice as well as by students."—Pittsburgh AmericanManufacturer. "A valuable work, and one which will meet with afavorable reception. * * * There is much need and muchroom for a rational and practical method for proportioningthe various parts of the steam engine, and in thisrespect your work is very welcome."—Augustus Jay DuBois, Ph.D., Yale College.
J. B. LIPPINCOTT & CO., Publishers,
SHEPARD'S CELEBRATED $50 Screw Cutting Foot Lathe. Foot and Power Lathes, Drill Presses,Scrolls, Circular and Band Saws, SawAttachments, Chucks, Mandrils, TwistDrills, Dogs, Calipers, etc. Send forcatalogue of outfits for amateurs orartisans. H. L. SHEPARD & CO., 331, 333, 335, & 337 West Front Street, |
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Special Offer. OUR NEW IMPROVED DOUBLE COILED METALIC TELEPHONE
is the finest in the world, and the only completely satisfactory low priced instrument, with Spring Call Attachment, made by practical machinists on scientific principles; warranted to work one mile, unaffected by changes in the weather. We will send to one address one sample set, comprising two Telephones, two walnut holders, six copper bound insulators and 200 feet heavy wire, at 25 per cent. discount from regular rates, which is $3.00 for the $4.00 instruments. This offer will not hold good after Jan. 15, 1879, as our goods will then be sufficiently well known to sell through the trade, and we shall be obliged to strictly maintain the retail price. Any person of ordinary intelligence can put them up by following directions sent with each pair. We have sold during the last three months nearly 1000 of these instruments, and have hundreds of testimonials from all parts of the country. We guarantee all instruments sold. For any Telephone that fails to work, we will refund the money and pay all charges. Ask any Commercial Agency, and you will find we are good for all we agree to do.