APPLES 
The only difficulty met in this combi- 
nation plan is due to the fact that the 
continuous alleys are reduced in width 
as they cross the triangular planting, 
for the obvious reason that the altitude 
of a triangle is less than its sides. This 
161 
objection can be avoided by substituting 
for the equilateral triangle a slightly dif- 
ferent figure. In the upper apex of the 
triangle is considered the center of a 
circle and a system of arcs are inscribed 
about this point which subtend an angle 
