GENERAL PRACTICE. SETTING OUT FOR PLANTING. 



141 



8 



apart, which is found between the stakes 1 and 2, describe an arc of its radius on the 

 ground, as indicated by the dotted line (4) ; then fasten the tape to the second stake (2), 

 drawing a line intercepting the first as shown by the dotted line (5), and there place a 

 stake for the first tree in the 

 second row (6). Then from the 

 second stake in the first row 

 describe another arc in the 

 direction of the third stake, as 

 shown in (7), transfer the tape 

 to the third stake, draw a line 

 across that last made from the 

 middle stake (8), and where 

 those lines bisect is the place 

 for the second tree in the 

 second row (9). These deter- 

 mined, any one with an eye and 

 a measure can set out any area 

 in equilateral triangles. 



The following table shows 

 the number of trees required 

 to plant an acre by the square, 

 equilateral triangle, and opposite 

 vacancy system, the latter being 

 the same as the square when 

 the trees are placed the same 

 distance in the rows as between 

 the rows. 



f 



7 

 5 



Fig. 27. SETTING our TEIANOLES. 



Distance. 

 Feet. 



3 



4 



5 

 6 



7| 

 9 

 10 



Square. Equilateral Triangle. 



4,840 & 566 



2,722 3,130 



2,151 2,473 



1,742 2,003 



1,210 1,391 



774 890 



537 615 



435 500 



395 464 



