miles per hour, and as being Harkness' eighteenth locomotive.^^ 



A more complete account was given of the Pioneer, the Cincinnati, 

 Hamilton, and Dayton Railroad's new engine, in the (Atuinuali 

 Daily Gazette of September 25, 1850: 



A. Harkness & Son have just completed a new locomotive engine, 

 designed for the Hamilton Railroad. It is eighteen tons in weight, and 

 embodies many improvements never before introduced in the manu- 

 facture of locomotives. 



The great objection to outside connecting engines is done away with, 

 being so constructed that the engine runs almost, if not quite as steady, 

 as the inside connecting machines. 



The engine has a separate cut off which is beautifully managed and 

 proves itself entirely effectual in its operation. The consumption of fuel 

 is also lessened about one-half .... 



Much credit is due to Mr. Z. H. Mann, the ingenious draftsman of 

 this establishment, for the arrangement of this beautiful specimen of 

 Western skill. He has been for many years in the East, laboring for the 

 improvement of the locomotive principle and in which he has been en- 

 tirely successful. 



The same paper in its issue of November 5 noted the Pioneer had been 

 shipped to Hamilton, Ohio, by the canal and would assist in the 

 construction of the line. 



Zadock H. Mann was formerly associated with the Proprietors of 

 the Locks and C'anals in Lowell. Massachusetts. In 1838 he was 

 granted U.S. patent 628 (issued March 10, 1838) in association with 

 L. B. Thyng for improvements in locomotive boilers. He apparently 

 left New England in the late 1840's and traveled west, eventually 

 settling in Cincinnati and becoming a designer for Harkness. 

 Mann's earlier connections perhaps account for the marked resem- 

 blance of the early Cincinnati engines to those made in New 

 England, notably at Taunton and Lowell. In 1851 Mann became 

 associated with Niles & Co., but was soon succeeded by J. L. 

 Whetstone. 



In 185039 the Little Miami retired its first locomotive, the Gov. 

 Morrow, built by Rogers in 1841, and traded it in to Harkness for a 

 new locomotive of the same name. 



^* Marvin, "Columbus and the Railroads of Central Ohio Before the Civil War.'' 

 '^'^ Little Miami Railroad: Report for i8jo. The 1857 report states that the (Jov. 

 Morrow was built in 1852. 



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