1 “... attempted to justify this description. One could say that a more detailed justification was given in my book...”

2 “... that one more book on this subject now appears. However, a little more justification of the book...”

3 “... justification: " . . . The difficulty of the previously unsolved problems has frightened nearly everyone away...”

4 “...The preface to a textbook frequently contains the author's justification for offering the public...”

5 Table of Contents: “... and Ends -- Lecture V Kummer’s Monument -- 1 A Justification of Kummer’s Method -- 2 Basic Facts about...”

6 “... feel there is justification for a text that puts emphasis on Lie's principal idea, namely, geometry...”