Front matter
Reading edition
Transcriber’s Note:
The source scans used are from the Dover edition, published in 1962, an unabridged republication of the work first published by the United States Government Printing Office. Part I was originally published in 1927 as Smithsonian Institution United States National Museum Bulletin 142; Part II was originally published in 1929 as Smithsonian Institution United States National Museum Bulletin 146. In Part II, the Smithsonian publication used Plate 1 as a frontispiece. The Dover edition included Plate 1 with the rest of the plates at the end of the book.
Footnotes were renumbered sequentially. Obsolete and alternative spellings were not changed.
Misspelled words were corrected. Missing diacriticals were added. Obvious printing errors, such as partially printed letters and punctuation, were corrected. Final stops missing at the end of sentences and abbreviations were added.