Front Matter

Front MatterSource: The Scientific Monthly, Vol. 32, No. 2 (Feb., 1931), pp. i-viiiPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/14987 .

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THE FEBRUARY

SCIENTIFIC MONTHLY

EDITED BY J. McKEEN CATTELL

THE ATLAS MOUNTAINS OF MOROCCO. PROFESSOR ANDREW C. LAWSON ........................................................... 97

ON THE TRAIL OF VAN LEEUWENHOEK. DR. JOHN BETHUNE STEIN .......................................................116

THE TOPOGRAPHIC BASE MAP OF THE UNITED STATES. CHIEF J. G. STAACK .135

SOLID MATTER: WHAT IS IT, AND WHY? DR. MAURICE L. HUGGINS .140

SOME OBSERVATIONS ON BUTTERFLY MIGRATIONS. AUSTIN H. CL. . . ..150

MENTAL DIFFERENCES AND FUTURE SOCIETY. DEAN ARLAND D. WEEKS .156

THE DEVELOPMENT OF A MAGIC FORMULA. EARL H. BELL 162

SCIENCE SERVICE RADIO TALKS: PLUMBING THE DEPTHS OF THE EARTH. PROFESSOR KIRT- LEY P. MATHER .165

WHAT GERMS ARE MADE OF. DR. WM. CHARLES WHITE 169

SOME POPULAR MISCONCEPTIONS ABOUT THE AMER- ICAN INDIAN. CHIEF M. W. STIRLING .172

A DWELLER IN THE PINEY WOODS. DR. FRANCIS HARPE. 176

THE PROGRESS OF SCIENCE: The Cleveland Meeting of the American Association for the Ad- vancement of Science and Associated Societies; The Science Ex- hibition; The Eighth Award of the American Association Prize; The Award of the Nobel Prize in Medicine to Dr. Hans Fischer .182

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Vol. XXXII, No. 2 FEBRUARY, 1931 Whole No. 185

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