HOME GROUNDS 137 



this spot and then pace forward to another spot 

 one hundred feet further on and five feet above the 

 first spot determined, while the observer moves 

 in like manner to the spot the assistant has just 

 marked. By repeating this process, a line can be 

 marked rising at the rate of five per cent. If the 

 line along the desired route should descend, the 

 observer will go ahead and sight back. If the line 

 goes around a rise of the land which hides the point 

 one hundred feet away, fifty feet can be paced in- 

 stead of one hundred, and the observer will sight 

 to a point on the assistant's clothing two and one- 

 half feet above the ground on which he stands. 

 For greater accuracy, the assistant can use a rod 

 on which feet and fractions of a foot are plainly 

 marked, and the distance can be measured with a 

 tape, but, for preliminary work, the method out- 

 lined is rapid and sufficiently accurate to deter- 

 mine whether the proposed line for a walk or drive 

 is feasible or not. If conditions are favorable, that 

 is, if the ground is open and reasonably smooth 

 so that pacing will show rather closely the actual 

 distance, the method outlined may answer for the 

 final determination of the proposed line. It will 

 also determine whether the grade must be changed. 



