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. Words and phrases in italics are surrounded by underscores, _like this_. Those in bold are surrounded by equal signs, =like this=. Footnotes we…
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