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 †.