nes of the image fall, and the plate is corroded at those places by a subsequent operation.
Named from the late rear-admiral John A. Dahlgren, of the United States navy.
A gun in which the front portion is materially lightened and the metal transferred to the rear, giving the bottle-shape, which caused some surprise on their first appearance in Europe.
Colonel Bomford, chief of ordnance of the United States army, commenced making this experiment previous to the war of 1812, and gave the name of Columbiad to the piece.
A raised platform at the upper end of a room, of a dining-hall, or room of ceremony.
On it the dining-table of celebrities was placed.
Its present use is for a throne or rostrum.
A spout or trough to carry off water; as a pump-dale.
1. A bank or structure across the current of a stream.
Dams for reservoirs are among the most important of all embankments, as their failure entails such extensive disasters.
It was practiced in Egypt at a remote period, and is shown in very successful condition about 1355 B. C. See the chairs, boxes, mummy-cases, and furniture of Rameses III.
in the Description of Egypt, by the French savans, about 1812.
The book is in the Congressional Library.
The art was very popular in India in times of whose dates we can only guess.
The Chinese, also, were early in the field, and excelled in this as they did and do in whatever requires patient toil and ful men. Mr. Murdoch will be recollected as the great gas-engineer, and a successful builder of a locomotive in early times.
Captain Lean is credited with a general advance which soon afterward took place.
The tabulated results for the years 1812-1843 are as follows: —
of engines.Average duty.Average duty of the best engine.Year.No.
of engines.Average duty.Average duty of the best engines.