Minor inconsistencies in punctuation of tables or captions are silently corrected.
Hyphenation is variable. Those compound words which are hyphenated only on line breaks are rendered using modern usage.
The word ‘movable’ appears only once as ‘moveable’ (165), which is retained.
The index entry for 'Œpophilus' is considered to be an error. All instances of the word appear in the text as 'Æpophilus'. This has been corrected and moved to the appropriate alphabetic position.
The following corrections were made to obvious printer’s errors: devel[e/o]ped (336); co[n/m]posed (364).
The following list contains punctuation corrections made:
| p. 65 | one of them[.] | Added. |
| p. 255 | [Class] LAMELLIBRANCHIATA | Added to match other entries. |
| p. 257 | their tendencies[,/.] | Corrected. |
| p. 292 | low-water[-]mark | Unhyphenated elsewhere. |
| p. 340 | [(]Cetacea) | Added. |
| p. 390 | in firm gelatine[,/.] | Corrected. |
| p. 403 | by its stipuled leaves[.] | Added. |
| p. 434 | Rhodospermeæ, 350, 355, 38[9] | Added. |