SPECIAL REPORT OF MR. IIILL, ON MACHINERY. 419
on the rods. The valve-stems were, in the majority of cases, arranged in the same way. The larger portion of the engines on view were fitted with condensers, and a favorite position for them was directly behind and in line with the cylinder, the prolongation of the piston-rod from the rear of the latter serving as the pump-rod. Beyond these minor points there was very little to be seen that would be particularly interesting; or suggestive to an American builder.
The following are examples of the prices of engines of different makers; price in United States currency, at ten per cent, below gold :—
of Cylinder, (inches.)
Stroke.
Price in XJ. S.
(inches.)
Currency.
Small English engine, well finished, f The 12-in., with steam-jacket, . |
4
6
12
8
12
24
$186 00 266 00 760 00
Same, semi-portable boiler included, ^
4
6
8
12
399 00 585 00
German build (Berlin), semi-port- f
6
10
827 00
able,..\
9
13
1,142 00
A French (Paris) semi-portable, . ^
6
9
10
13
770 00 1,212 00
A variable cut-off, very well built, (
14
32
2,460 00
with steam-jackets. Condenser
18
40
3,130 00
extra.(
• 34
60
8,877 00
Iron Working Tools.
Of tools for working iron there was a large display in the Machinery hall. As we have already stated, the American department, although very limited in extent and in the number of exhibitors, was still the most interesting portion of the mechanical exposition, and contained more that was original than all the rest. The tools of Sellers, of Philadelphia ; of Messrs. Pratt & Whitney, of Hartford, Ct. ; Brown & Sharpe, of Providence, R. I. ; and Styles & Parker, of Meriden, Ct., were universally praised for their workmanship as well as their originality. Massachusetts, though undoubt-