chap, vi.] THE KITCHEN-GARDEN. 139 
wheeling is principally thrown upon a very- 
narrow wheels which, on soft walks, literally 
ploughs its way through the gravel, leaving 
an uneven furrow, extremely offensive to the 
eye. To avoid this inconvenience, the walks 
in kitchen gardens, where expense is not an 
object, are frequently made of cement or 
asphalt, or laid with bricks or flag-stones; 
but as all these materials give the idea of a 
court-yard, rather than a garden, most per¬ 
sons prefer gravel walks. Where gravel is 
to be employed, the intended w r alks are 
marked out with two garden lines; the space 
between is then dug out, generally in the 
form of an inverted arch, from one foot to 
two feet deep in the centre, according to the 
nature of the soil, and the expense it may be 
thought advisable to incur; and the excava¬ 
tion is filled to within six inches of the top 
with brick-bats, stones, or any other hard rub¬ 
bish that can be procured. If the excavation 
be made in the shape of an inverted arch, in 
filling it up the extreme point of the arch 
should be left hollow to serve as a drain ; and 
if it be made rectangular, a drain is generally 
left on each side. In filling in the rubbish 
