Briefly Reviewed. (Book Reviews: Mathematik, Logik und Erfahrung; Making Friends with Birds) Bell, E. T. ; Friedmann, Herbert ; Gardner, V. R. ; Leikind, Morris C. ; Heyl, Paul R. ; Milne, Lorus J. ; Milne, Margery J. ; Oehser, Paul H. ; Merrill, E. D. Abstract Publication: The Scientific Monthly Book Author(s): Kraft, Victor; Morss Lovett, Robert Pub Date: January 1949 Bibcode: 1949SciMo..68...72K