458 Major-Gcneral Roy*s Account of the 



the ditches, and height of the banks of the old Roman way ; 

 therefore trellels, fuited for the purpofe, had been now pre- 

 pared-: and left any accident might have happened in conduct* 

 ing this part of the operation, lo as to oblige us to a repetition^ 

 double pickets were placed in the nfual manner in the ground 

 two rod lengths from the twenty-fixth flation, to which we 

 could have referred, witliout going back as fir as the tripod 

 left at the twenty- ninth ftation, the point from which we ha4 

 departed in the morning. 



Bad weather prevented any progrefs being made on the 25th; 

 and, on the 26th, all that could be done was to meafurc the 

 tvventy-fecond and twenty-firfl: hypothenufes. 



On Friday the 27th, the work w^ent on more expeditioufly, 

 having in the courfe of that day meafured lix hypothenufes, 

 and placed the tripod at the fourteenth ftation. 



On Saturday the 28th, eight hypothenufes were meafiired, 

 and the tripod was placed at the fixth ftation. In this" day's 

 operation, being arrived near the bridge laid over Wolfey River, 

 double pickets "\vere placed in the ground in the point anfwer- 

 ing to the extremity of the ii72d rod, reckoning from the 

 north-wefl, or the 198th rod from the fouth-eafl: end of the 

 bafe, that we might recur to them in cafe of accident ; and 

 the eighteen rod lengths, between this point and the fixth 

 ftation, were meafured on the level, inftead of the hypothe- 

 nuial line, which required the alteration of the reduction as 

 diftlngulfhed by the afterifk In the general table. 

 .,.On Monday the 30th of Augufl, the meafurementwith the 

 glafs rods was completed* ; when the extremity of the i37cth 



rod 



* The gentlemen who were prefent at, and affifling in, the laft day's operation 

 were jj^^s^tain, BissET,vMr, Grevule, Sir William Hamilton, ]\lr, Lloyd, 



and 



