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The character of the book and the method of its production have necessarily placed a restriction upon editorial functions, and have not allowed of modifications that might have brought more directly home some of its teachings to readers in Britain for instance, by the introduction of a greater number of illustra tive references to vegetation in the British Isles. If, as we believe will be the case, a new edition of the book is called for, attention may be given in it to matters of this kind.
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