o 



54,6 The Account of a 



way equal embarrassments. The station called Carraton Hill, is 

 situated on its southern extremity, from which no part of the 

 north of Cornwall can be seen : it, therefore, became expedient 

 to erect a staff on the top of the rugged hill Brown Willy, (a 

 spot not accessible to the instrument,) and afterwards to content 

 ourselves with surveying round it. This resolution became the 

 more necessary, as by means of it, the triangles in the west of 

 Devon will be hereafter connected with those in the north of 

 Cornwall, in a shorter and more direct way than from the sides 

 in the more southern country. In order, therefore, to observe 

 the staff erected on this station, the instrument was taken a se- 

 cond time to Bodmin Down. The station named Cadon Barrow, 

 near Camelford, and those on St. Stephen's Down, near Laun- 

 ceston, were also visited ; at which time it was judged expedient 

 to discontinue the operations in Devonshire. 



In proceeding along the southern coast, in the years 1795 and 

 1796, with a single chain of triangles, we acted in conformity with 

 our instructions. It was, in many points of view, the most eli- 

 gible mode of proceeding; and particularly in that which regarded 

 an early determination of the latitudes and longitudes of the 

 great head-lands in the channel, and also of the Scilly Isles. 



When the operations above spoken of were completed, and 

 those instructions carried into full execution, (ample materials 

 being provided for ascertaining the situations of every remarkable 

 point on the English side of the channel,) the want of a spot 

 in the southern part of Cornwall, for the measurement of a base, 

 was felt and regretted; we were, therefore, unwilling to 

 introduce errors, if any should exist, from the sides in Cornwall, 

 into the north of Devon : our operations were consequently 

 discontinued. 



