Transcriber’s note

Printer errors: A number of printer errors have been corrected. These are marked by light underlining and a title attribute which can be accessed by hovering with the mouse. For example, text. In addition, some punctuation errors have been corrected, but inconsistent hyphenation has been left as in the original.

Greek: This book contains many Greek words and phrases. Some browsers may not display all the letters correctly. However, a transliteration is provided in a title attribute which can be accessed by hovering with the mouse. For example, δενδρον. The inconsistent use of accents on Greek letters is as in the original.

Accessibility: Expansions of abbreviations have been provided using the <abbr> tag, and changes in language are marked. The following accesskeys are provided:

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