LAYING OUT THE GROUND. 81 



the other end at g. Having set a stake at o, and one at g, 

 measure with the pole, and set stakes in the line o g d, the 

 length of the pole apart. The principal points of the entire 

 plot are now fixed with such accuracy that one person may 

 stand at A, and move towards a, while another sets all the 

 stakes in the row, o k. After a row has been set from a to 

 o, a row across the ends at d &, another row from a to d, 

 and from o to d, the remainder of the stakes can be stuck 

 at the desired points, without measuring, by simply setting 

 each stake in a line, in two directions, with those stakes that 

 have been driven in the right places. 



It will be perceived by the two diagrams given on pages 

 74 and 78, that they both represent a plot of ground twen- 

 ty-nine rods long by twenty-seven and a half wide, em- 

 bracing just ten square rods over five acres. The spaces 

 indicated between the places for trees, as may be seen, rep- 

 resent exactly two rods, or thirty-three feet. The points 

 may be counted in the diagrams quite as well as if a five- 

 acre lot were before us all properly staked out. If trees 

 were to be planted on two such plots, there would be a gain 

 of space for thirty trees by planting in the quincunx order, 

 while no two or three would be crowded. If the trees were 

 to be set only half the distance apart, there would be a gain 

 of space for sixty trees, as any one can calculate for him- 

 self. 



In case it were desirable to set pear-trees, peach-trees, or 

 grape-vines in the quincunx order, all that will be requisite 

 is to make a pole of the desired length, and set a row of 

 stakes six, ten, or sixteen feet apart, on one side of the plot 

 at a o, Fig.. 42. Then proceed to measure with the pole as 

 directed, to find the proper angle for setting the other rows. 



Another way for marking out ground in a triangular form, 

 or in the quincunx order, is to procure three poles of a uni- 

 form length say sixteen and a half feet long and bolt or 



4* 



