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the earth work, of which the following engraving, pre- 

 pared from a large plan made by Mr. J. H. Emerton, from 

 plottings taken with the assistance of Messrs. Reams 

 and Collett, gives the outline and general character. 



The fort is situated on a plateau of loess, about one 

 hundred and seventy feet in height above low water, on 

 the east bank of the river. On the river side, the bank, 

 which principally consists of an outcrop of sandstone, is 

 very steep, and forms the western line of the fortification, 

 while deep ravines add to its strength on the other sides : 

 the weak points being strengthened by earth works. The 

 general course of the work is from the north, where it is 

 very narrow (not over 50 feet) owing to the formation of 

 the plateau, south along the river bank about 725 ft. to its 

 widest portion (at H) which is here about 375 ft. east 

 and west. From this point it follows a deep ravine south- 

 erly about 460 ft. to the entrance end of the fort. The 

 bank traversed by the entrance road is here much wider 

 than at other portions, and along its outer wall, running 

 eastward, are the remains of what was evidently once a 

 deep ditch. The outer wall (A, B) is about 30 ft. wide 

 and is now about 1 1-2 ft. high ; a depressed portion of 

 the bank, or walk way, then runs parallel with the outer 

 wall, and the bank (C, D) is then continued for about 20 

 ft. further into the fort, but of slightly less height than 

 the front. Through the centre of these banks there are 

 the remains of a distinct roadway about 10 ft. in width. 



From the northeastern corner of this wide wall the line 

 continues northwesterly about 350 ft. along the eastern 

 ravine to a point where there is a spring and the ravine 

 makes an indenture of nearly 100 ft. to the southwest. 

 The mouth of the indenture is about 75 ft. in width and 

 the work is here strengthened by a double embankment 

 (E, F). The natural line of the work follows this inden- 



