Appendix D 341 



1906. WINKLER, H., Morphologic und Biologie tropischer Bluten 



und Fruchte. Bot. Jahrb. 38 : 233-271. 

 1906. WINKLER, H., 'Parthenogenesis bei Wikstroemis indica 



(L.), C, A. Mey, und ihre Bedeutung fur die Lehre der Be- 



fruchtung. Jard. Bot. Ann. n.s. 5 : 208-276, 4 pis. 

 1906. WITTMACK, L., Berichte iiber die Internationale Konferenz 



uber Hybridisation und Pflanzenzucht in London vom 30. 



Juli bis 3. August 1906. Gartenflora 55: 481-486, 509- 



511. 

 1906. WITTMACK, L. The Influence of the Graft on the Rooting 



of the Pear. Gard. Chron. 3d ser. 40 : 150. 



1906. WITTMACK, L. Sports. Gard. Chron. 3d ser. 40 : 223. 



1907. BALLS, W. R., Note on Mendelian Heredity in Cotton. 

 Jour. Agr. Soc. 2 : 216. 



1907. BESSEY, C. E., A Synopsis of the Plant Phyla. Univ. 

 Studies, Univ. of Nebraska, 7 : 275-373. 1-99. 



1907. BIFFEN, R. H., Studies in the Inheritance of Disease Re- 

 sistance. Jour. Agr. Sci. 2 : 109. 



1907. BIFFEN, R. H., The Hybridization of Barleys. Jour. 

 Agr. Sci. 2 : 183. 



1907. BOULENGER, G. A., On the Variations of the Evening 

 Primrose, (Enothera biennis. Jour. Bot. 45 : 353-363. 



1907. BROWN, ARTHUR ERWIN, Variation or Mutation. Science, 

 n.s. 25 : 107-108. 



1907. BROWNLEE, JOHN, Statistical Studies in Immunity. A 

 discussion of the means of estimating the severity of cases of 

 acute diseases. Biometrika, 5 : 423-435. Tab., Diagr. 



1907. BUTLER, E. J., The Selection of Sugarcane Cuttings. 

 Agr. Jour. India, 2 : 193. 



1907. CARD, FRED W., Cherry Crosses. Rhode Is. Agr. Exp. 

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1907. CASTLE, W. E., On a Case of Reversion Induced by Cross- 

 breeding and its Fixation (guinea-pig}. Science, n.s. 25: 

 151-153. 



