It may be remembered that when altitude is spoken of in peach growing, mere height above the sea is not intended - any elevated spot which will admit of the fogs falling into the lower ground is the idea intended to be conveyed. And this is probably true of all fruits, as of peaches. However, in regard to peaches, the editor of the Country Gentleman remarks "that it is not altitude above the sea level which affects the bearing, but ground sufficiently elevated above sheltered valleys to be above the lakes of cold air which settle in those valleys. We have found by the thermometer a difference of several degrees, on cold, still nights, between the temperature at the bottom of such valleys and only fifty feet up. Those valleys may exist on table land a thousand feet high, and be fatal to the peach crop; and hills where the crop escapes may be only a hundred feet above sea level."