--Retained publication information from the printed edition: this eBook
is public-domain in the country of publication.
--Corrected a few palpable typos.
--In the text versions only, text in italics is delimited by
_underscores_.
--Included a transcription of the text within some images.
--Added a caption “Flower Clusters” to an uncaptioned illustration on p.
15.
--The HTML version contains relative hyperlinks to the _Manual of the
Trees of North America_ (Gutenberg eBook #46450), so that offline
copies can be interlinked.