Transcriber’s Notes
Obvious typographical errors have been silently corrected. Variations in hyphenation has been standardised but all other spelling and punctuation remains unchanged.
Ditto marks, in the table of contents and illustrations, have been replaced by the text. Blank pages and their page numbers have been omitted.
The cover was created by the transcriber and is placed in the public domain.
The moon. From a photograph taken at the Lick Observatory.
THE UNIVERSITY SERIES