Minor errors in punctuation and formatting have been silentlycorrected. Please see the transcriber’s note at the end of thistext for details regarding the handling of any textual issuesencountered during its preparation.

Page headers signalled changes of topic, and have been retainedas paragraph descriptions (‘sidenotes’). Where the headers persistacross multiple pages, they were removed. On occasion, the headerson facing pages are interleaved during an extended discussion of atopic. Only the first of each were retained.

The position of illustrations may have been adjusted slightly. Thepage references to them in the Table of Contents are linked to theactual position of each. Each plate is linked to a larger imageto facilitate inspection of the details.

Captions for the Plates which appear within the images have beenrepeated as text to facilitate searches. Where no captions were given,or the images are composites (e.g. Plate III), thedescriptions used in the Table of Contents were used.

The alphabetic footnotes in the original restarted with ‘a’ andcycled through the alphabet multiple times. Several notes to tablesused the typical asterisk and dagger symbols. All footnotes have beenre-sequenced numerically for uniqueness.

Footnotes, some of which are quite lengthy digressions, have beenmoved to the end of the text and linked to facilitate navigation.