33 McDonald and McCollum : The bios of Wildiers and the 



cultivation of yeast. Jour. Biol. Chem. 1921 XLVI 525. 



34 Nelson, Fulmer and Cessna : The nutritional requirements 



of yeast. III. The synthesis of water-soluble B by 

 yeast. Jour. Biol. Chem. 1921 XLVI 77. 



35 Souza and McCollum : A study of the factors which interfere 

 with the use of yeast as a test organism for the anti- 

 neuritic substance. Jour. Biol. Chem. 1920 XLIV 113. 



SH Hopkins, Chick et al : Report on the present state of knowl- 

 edge concerning accessory food factors (vitamines). 

 Medical Research Committee Special Report No. 38 

 1919. 



37 Edge worth : Experiments with two methods for the study 



of vitamin B. Dissertation 1922. 



38 McCarrison : Studies in deficiency diseases. Oxford Uni- 



versity Press. 1921. 



39 Osborne, Wakeman and Ferry : Preparation of protein free 



from water soluble vitamine. Jour. Biol. Chem. 1919 

 XXXIX 35. 



40 Osborne and Mendel : Nutritive value of the wheat kernel. 



Jour. Biol. Chem. 1919 XXXVII 572. 



41 Kennedy and Dutcher : Vitamine studies. IX. The influence 



of the diet of the cow upon the quality of the vitamines 

 A and B in milk. Jour. Biol. Chem. 1922 L 339. 



42 Hopkins : Note on the vitamine content of milk. Biochem. 



Jour. 1920 XIV 721. 



43 Osborne and Mendel : Milk as a source of water-soluble 



vitamine. Jour. Biol. Chem. 1918 XXXIV 537. 



44 Osborne and Mendel : Milk as a source of water-soluble 



vitamine. II. Jour. Biol. Chem. 1920 XLI 515. 



27 



