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191 Sageebt, a. : Considerations snr la production des hybrides, des 



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192 Shamel, a. D. : The Effects of Inbreeding in Plants. Yearbook 



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195 S'HULii^ G. H. : Hybridization Methods in Com Breeding. Amer. 



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196 Shull, G. H. : The Genotypes of Maize. Amer. Nat., 1911, xlv, 



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198 Shull, a. F. : The Influence of Inbreeding on Vigor in Hydatina 



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199 Shuu,, a. F.: Studies in the Life Cycle of Hydatina senta. III. 



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200 Steasbttegee, E. : Versuehe mit diSeischen Pflanzen in Riioksieht 



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201 Steasbtjegee, E. : Ueher geschlechtbestimmende Ursachen. Jdhrb. 



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202 Stuetevant, A. H. : The Linear Arrangement of Six S'ex-linked 



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 204 Sueface, F. M. : Fecundity in Swine. Biometrika, 1909, vi, 433-436. 

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