Records of Frost. 125 
of fifty years or more; in showing the effects of 
adjacent bodies of water; in the effects of topog- 
raphy, and in situation. 
“The effect of topography is shown well in the 
cases already cited, eastern and western New York 
and Pennsylvania. It is equally true of Virginia 
and West Virginia, and North Carolina and Ten- 
nessee. The effect of situation is shown markedly 
in the case of Maine, which is north of New 
Hampshire and Vermont, and yet earlier. Georgia’s 
season opens twenty-one days later than South Car- 
olina’s, and ten days later than Alabama’s, while 
North Carolina is ten days later.” 
The liability of any particular locality to injury 
from late spring or early fall frosts is capable of 
being expressed in charts or by other graphic 
means. Very good records of the habitual frosti- 
ness of any place could be made by an army of 
careful growers who had neither a barometer nor a 
thermometer. Let us suppose, for instance, that the 
peach-growers ‘of a certain geographical area were 
to make observations for a number of years upon 
the relative synchronisms of late frosts and bloom- 
ing-time, a subject which is of the most vital im- 
portance to every grower of the tender fruits. The 
tabulation of these observations would enable us to 
construct two series of curves, which would indicate 
at a glance the comparative safety of any station 
for the cultivation of the given crop. We will 
suppose that observations have been taken for a 
number of years by various persons at seventeen 
