Some illustrations have been moved from their original positions to avoid breaking up the text, and to put them in numerical order.
Variations in spelling and punctuation have been retained from the original book except for the following changes:
Page51: Both instances of "varities" changed to "varieties".
Page74: "occuring" changed to "occurring".
Page91: "foilage" changed to "foliage".
Page93: "analagous" changed to "analogous".
Page94: "or" changed to "nor"."investigatior" changed to "investigator".
Page100: "gravly" changed to "gravelly".
Page113(Index): "Appleseed, Johny" changed to "Appleseed, Johnny"."Bark of Cheery" changed to "Bark of Cherry".
Page115(Index): "Linnæus" changed to "Linnaeus" to match text.