212 VINES 
with low gutters and a long reach from gutter 
to peak. Houses are run in both directions, 
but I prefer to locate mine along a north and 
south line, in order to distribute the light more 
evenly. The house should be well piped for 
heating, especially if the fruit is required early 
and forcing is resorted to. Never build a house 
without at least one pipe, since this is necessary 
in preventing and combating mildew. If the 
house is twenty feet wide and twelve feet 
high at the peak, it should carry four four-inch 
flow, and six four-inch return pipes. These 
will give ample heat at all times, especially if 
they are divided, half running along each side 
of the house. 
The grapery should be freely open to the 
light with no trees near enough to cast any shade 
on it. The house should also have provision 
_ for abundant ventilation. This is best allowed 
for by two top and two bottom ventilators. 
There is rarely occasion to open all the ventilators 
at once, but it is always advisable to ventilate 
from the side opposite to the wind, which cannot 
be accomplished if the ventilators are on one 
side only. Mildew is ofttimes the result of faulty 
ventilation. The grape house should also be 
supplied with a water faucet and an unlimited 
