ON PRACTICAL PLANS 
It goes without saying that the varieties to be 
selected must be of a character adapted to the 
climate and soil of the chosen region. As to this, 
the restrictions imposed by Nature are more or 
less familiar to every fruit grower. In general, 
you may judge to a certain extent from observa- 
tion of what is already grown in your neighbor- 
hood as to what kinds of trees will thrive there. 
The chief restrictions are those imposed by con- 
ditions of temperature, and of course temperature 
is influenced not merely by the latitude but by dis- 
tance above the sea level and the neighborhood of 
large bodies of water. 
The presence of moisture in the air has a pro- 
tecting influence, chiefly in that it prevents radia- 
tion of heat at night. Every orchardist knows that 
the danger from frost increases in proportion as 
the night is clear. The now familiar method of 
fighting frost by burning brush or oil supplies 
direct heat, but also supplements this by filling 
the air with smoke, which retards the radiation 
of heat. 
It is familiarly known that seaboard regions 
have much milder winters than inland regions of 
the same latitude. 
Again, inland regions of low altitude, such as 
the Mississippi Valley, may be adapted to the 
growth of a fruit that would inevitably winter- 
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