414 



Report S.A.A. Advancement of Science. 



" The fourth line of sheet is log. of distance; fifth line is log. 

 COS. and log. sine ; seventh line southing and westing as obtained from 

 logarithms; eighth line the co-ordinates of 1128 M ; and the last 

 line just above the co-ordinates of the new point 11 29 M. 



" The two columns on right of sheet. are used for checking with 

 traverse tables. 



" The horizontal and vertical distances are worked out on a 

 similar sheet to the co-ordinate sheet, and are kept with the co- 

 ordinate sheets. 



" All co-ordinates and elevations are copied into a strongly- 

 bound book, which is usually kept in the office safe." 



This method is systematic, but, in addition to the weak points 

 noted in (2) and (4), he does not work out his horizontal distance on 

 the same sheet, but does so on another. 



In the writer's opinion, the calculation of data observed at any 

 one station should be all done together in the same natural sequence 

 as observed. 



(6) gives the following form : — 

 Survey lOth Level, New Main S.R.E. 



