Back MatterSource: The Scientific Monthly, Vol. 38, No. 5 (May, 1934), pp. ix-xivPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/15521 .

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS ix

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xi

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xii THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xiii

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