78 SCHLESINGER 



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Stuart-Harris, C. H., 1939. Neurotropic Strain of Human Influenza Virus. Lancet, 1, 

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Sugg, J. Y., and Magill, T. P., 1948. The Serial Passage of Mixtures of Different 

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Svedmyr, A., 1948a. Studies on a Factor in Normal Allantoic Fluid Inhibiting Influ- 

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Ziegler, J. E., Lavin, G. I., and Horsfall, F. L., Jr., 1944b. Interference between the 

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