Tanscriber's Notes:Obvious punctuation and spelling errors have been fixed throughout.Inconsistent hyphenation is as in the original.The Errata mentioned on Page vi for this volume and Page viii for Volumes I and II have been made to the appropriate volumes. The footnote references for Volumes I and II have been updated to the new numbers in those volumes.For high resolution scans of the Plates, click the Plate name in the caption.Elements in the Figures that have an asterisk above them are referred in the text as a superscipt asterisk, since most fonts won't display the asterisk above.Footnote953: There is no anchor for this in the original, left as is.Footnote1553: There is no anchor for this in the original, left as is.