The driving boxes are novel, and good, being after the plan of Z. H. 

 Mann, of Cincinnati. — On the front of the brass box is a separate piece, 

 which is set up, as it wears, by a wedge passing between it and the inside 

 of the cast iron box. The wedge is adjusted by a rod, and nuts on either 

 side of the jaw brace. The iron boxes are planed up so as to place the 

 center of the shaft in the exact center of the jaw. This is done by slipping 

 a ring of the size of the shaft into the box, while it is on the planer, dropping 

 the chisel to touch the ring, and then planing the slot where the box em- 

 braces the jaw, to just this depth. The same operation with the other slot, 

 accomplishes the object. 



There are various miscellaneous parts worthy of note. The cab is rather 

 showy, and very commodious. The ornamental brass work is well done 

 but not elaborate, and not, in all cases, graceful. The running board is 

 very light, and of the modern style, — not resembling a railroad bridge as 

 much as some running boards we have seen. The cow-catcher is equally 

 showy and awkward. The painting is very neat, and not gaudy. 



The truck is novel, and very good. We shall describe it at another time. 



On the whole, NILES & Co. built a first-rate engine; and it will com- 

 pare, in work at least, with the general build of the East. [From the Railroad 

 Advocate (September 20, 1856), vol. 3, p. 2.] 



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