which are inherent in mathematical and physical science as such.
While Professor Cassirer has had his fundamental principles confirmed
rather than disproved by this recent development, his discussion
in Chapter IV, Section VI, of Substance and Function must be taken
in connection with his later statements.

With regard to the translation, the translators are aware that a
good deal of the vigor and savor of the original has escaped in the
process of substituting correct but colorless terms for the more vivid
language of the original. Accuracy and clarity have been their
chief aim. They alone are responsible for the italicized paragraph
headings, which were inserted because it was thought that the book
might be used as a text or reference work in connection with an
advanced course in the Theory of Knowledge and that perhaps these
guide-posts might help the student in finding his way through the
difficult material.

Professor Cassirer himself kindly read the entire work in manuscript
and, in a friendly letter, states that "nach der Gesamteindruck . . .
besteht für mich kein Zweifel class der Sinn des Ganzen richtig getroffen
und wiedergegeben ist." We wish herewith to express our hearty
thanks to Professor Cassirer for permitting us to translate his works
as well as for his trouble in reading the manuscript of the translation
and for his courtesy in the whole transaction.

WILLIAM CURTIS SWABEY,
MARIE COLLINS SWABEY.

-vi-