U.S. GOVERNMENT PRINTING OFFICE: 1969



Transcriber's notes:

The original language has been maintained, including inconsistencies in spelling and hyphenation, except as mentioned below.

Changes made to the original text: chemise type changed to chemise-type as elsewhere; page 17: closing square bracket deleted after what an array; page 65: quote mark inserted before footnote anchor [65].

Footnotes have been moved to the end of the document; illustrations have been moved to where they fit best in the text.