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In the first instance, the base line having been traced, which 

 can be done by measuring the width of a prospected roadway from, 

 say, a line of fence to the intending first row of trees or vines, pegs 

 are set in the ground, so that the two lines, fence, and row of trees 

 are parallel. A roadway of 18 to 20 feet is all that is necessary to 

 allow the horses and implements to turn at the headland. On this 

 line, as a base line, the next thing to do is to figure out a right 

 angle corner, and the following way of doing this is mathematically 

 correct : First, along the base line of the given piece of ground we 

 may imagine it is purposed to put under vines, at distances of 

 10 feet square, measure with the tape three intervals of 10 feet each, 

 putting pegs at each distance. Then having secured a flexible line, 

 such as picture wire, marked off into nine or more 10-feet intervals 

 by means of string or strips of calico ; set one end of that line at the 

 corner peg A, where the first vine is going to be planted, then 

 stretch it as correctly as guesswork will permit in a direction 

 perpendicular, or at right angle to the base line, and at the fifth 

 mark which shows the fourth interval drive down a peg ; round 

 this peg turn your wire, and bring it to the peg B, driven at the 

 third interval along the base line. If the mark along the measuring 

 line meets the peg B along the base line A, E, then the angle 

 B, A, C is a right angle, if it does not, shift peg C until the 10th 



fence 



