Note 1 — Chapter I
Reading edition
The interested reader will do well to investigate the very inexpensive Chester A. Reed flower and bird pocket-guides, illustrated in color; Mrs. Dana’s How to Know the Wild Flowers, and How to Know the Ferns; the Chapman bird books; Collins and Preston’s Key to the Trees; Julia Ellen Roger’s Tree Guide; Keeler’s Our Native Trees; F. Schuyler Mathews’ various field books; etc. Of course he already has made the acquaintance of John Burroughs.