CHAPTER XVIII 
THE GRAPE 
The grape industry — Greenhouse grapes for quality — The construction 
and care of a grape house — Growing grapes in-doors — Insect enemies 
and diseases —In-door varieties — Growing grapes out-doors — List 
of varieties. 
Because the fruit is useful in so many ways, 
and because the plant itself survives and yields 
in so many and such varying climates and soils, 
the grape (Vitis) is the most common and most 
universally grown of all fruits. Asan ornamental, 
too, it should receive some consideration, for 
it is a rapid grower, even under remarkably poor 
conditions, bears handsome green foliage, and 
~ responds more readily than almost any other plant 
to good treatment. ‘The conditions most condu- 
cive to its success are good, rich soil, free drainage, 
an abundance of water, and sunlight. 
To get some idea of the magnitude of the 
grape-raising industry it will be necessary to 
review a few figures. The average annual pro- 
duction of grapes is about 80,000,000,000 pounds; 
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