To appreciate the wild and sharp flavors of these October fruits, it is necessary that you be breathing the sharp October or November air. The out-door air and exercise which the walker gets give a different tone to his palate, and he craves a fruit which the sedentary would call harsh and crabbed. They must be eaten in the fields, when your system is all aglow with exercise, when the frosty weather nips your fingers, the wind rattles the bare boughs or rustles the few remaining leaves, and the jay is heard screaming around. What is sour in the house a bracing walk makes sweet. Some of these apples might be labelled, “To be eaten in the wind.” Of course no flavors are thrown away; they are intended for the taste that is up to them. Some apples have two distinct flavors, and perhaps one-half of them must be eaten in the house, the other out-doors. One Peter Whitney wrote from Northborough in 1782, for the Proceedings of the Boston Academy, describing an apple-tree in that town “producing fruit of opposite qualities, part of the same apple being frequently sour and the other sweet;” also some all sour, and others all sweet, and this diversity on all parts of the tree. There is a wild apple on Nawshawtuck Hill in my town which has to me a peculiarly pleasant bitter tang, not perceived till it is three-quarters tasted. It remains on the tongue. As you eat it, it smells exactly like a squash-bug. It is a sort of triumph to eat and relish it. I hear that the fruit of a kind of plum-tree in Provence is “called _Prunes sibarelles_, because it is impossible to whistle after having eaten them, from their sourness.” But perhaps they were only eaten in the house and in summer, and if tried out-of-doors in a stinging atmosphere, who knows but you could whistle an octave higher and clearer? In the fields only are the sours and bitters of Nature appreciated; just as the wood-chopper eats his meal in a sunny glade, in the middle of a winter day, with content, basks in a sunny ray there, and dreams of summer in a degree of cold which, experienced in a chamber, would make a student miserable. They who are at work abroad are not cold, but rather it is they who sit shivering in houses. As with temperatures, so with flavors; as with cold and heat, so with sour and sweet. This natural raciness, the sours and bitters which the diseased palate refuses, are the true condiments. Let your condiments be in the condition of your senses. To appreciate the flavor of these wild apples requires vigorous and healthy senses, _papillæ_[11] firm and erect on the tongue and palate, not easily flattened and tamed. [11] A Latin word, accent on the second syllable, meaning here the rough surface of the tongue and palate.