Part 1

TRANSCRIBER’S NOTE

Italic text is denoted by underscores.

Bold text is denoted by =equal signs=.

Small caps is converted to all caps.

Errata have been applied to the etext.

Footnotes have been relocated to the end of the etext.

Some minor changes to the text are noted at the end of the book.

Geological and Solar Climates

Their Causes and Variations.

A THESIS.

MARSDEN MANSON, C. E.

Geology and Physics: UNIVERSITY OF CALIFORNIA, May, 1893.

Entered according to Act of Congress in the year 1893, By MARSDEN MANSON, In the office of the Librarian of Congress, at Washington, D. C.

SAN FRANCISCO: George Spaulding & Co., Printers. 414 Clay Street.

ERRATA.

Preface, next line to last, for waiver read waver.

Page 5, foot-note, 7th line from bottom, for Hetvetic read Helvetic.

Page 14, in foot-note, 6th line from top, for Zenographic read Zenographical.

Page 17, last line, for area read era.

Page 20, 14th line from top, for wherever read whenever.

Page 23, 3d line from bottom, for area read era.

Page 23, 4th line from bottom, for merging read emerging.

Page 41, 15th line from top, after necessary for the, insert, removal of glacial conditions, and for the

Page 44, the second paragraph should read: The trapping process not being a function of the orbital distance, nor of the actual amount of heat received, but of the composition of the atmosphere, this rise, etc.

Page 47th, 6th line from top, insert ” at end of paragraph, after out.

Ib, 6th line from bottom, for * substitute †.

PREFACE.

The worshipers of truth are delving in every hamlet--many have before them the daily burdens of life, from which they can snatch but a few hours each day to give to their chosen faith.