The letters identifying the elements in Fig. 653, Fig. 719 and Fig. 936 were not clearly printed.

The following are used inconsistently in the text:

On p. 127 the text refers to two characters k; only one is shown in the illustration.

The following possible errors have not been changed:

Inconsistent use of small capitals for volume numbers in the List of Works and Authors Cited has not been regularised.

The following were hyphenated at the end of lines: