Front matter

Every attempt has been made to replicate the original as printed. Some typographical errors have been corrected; a list follows the text. Contents: Chapter I., II., III., IV., V., VI., VII., VIII., IX., X., XI., XII., XIII., XIV., XV., XVI., XVII., XVIII., XIX., XX., XXI., XXII., XXIII., XXIV., XXV., XXVI. (etext transcriber's note)