54 BACTERIAL FERMENTATIONS 



to pyruvate need to be carefully investigated in the light 

 of the recent discovery of multiple pathways of carbo- 

 hydrate breakdown. These are all problems for the future. 



REFERENCES 



1. Donker, H. J. L., Bijdrage tot de kennis der boterzuur-, butylal- 



cohol- en acetongistingen, dissertation, Technical University, 

 Delft, 1926 (W. D. Meinema, publisher) . 



2. van der Lek, J. B., Onderzoekingen over de butylalkoholgisting, dis- 



sertation, Technical University, Delft, 1930 (W. D. Meinema, 

 publisher) . 



3. Peterson, W. H., and E. B. Fred, Ind. Eng. Chem., 24, 237 (1932) . 



4. Kluyver, A. J., The Chemical Activities of Micro-Organisms, Uni- 



versity of London Press, London, 1931. 



5. Reilly, W. J., W. J. Hickinbottom, F. B. Henley, and A. C. Thaysen, 



Biochem. ]., 14, 229 (1920) . 



6. Speakman, H. B., /. Biol. Chem., 43, 401 (1920) . 



7. Wood, H. G., R. W. Brown, and C. H. Werkman, Arch. Biochem., 



6, 243 (1945) . 



8. Barker, H. A., and S. M. Taha, /. Bacteriol, 43, 347 (1942) . 



9. Bornstein, B. T., and H. A. Barker, /. Bacteriol, 55, 223 (1948) . 



10. Bornstein, B. T., and H. A. Barker, /. Biol. Chem., 172, 659 (1948) . 



11. van Beynum, J., and J. W. Pette, Zentr. Bakteriol. Parasitenk., II, 



93, 198 (1935). 



12. Bhat, J. V., and H. A. Barker, /. Bacteriol., 54, 381 (1947) ; 56, 



777 (1948). 



13. Barker, H. A., and V. Haas, J. Bacteriol., 47, 301 (1944) . 



14. Barker, H. A., M. D. Karaen, and V. Haas, Proc. Natl. Acad. Sci. 



U. S., 31, 355 (1945) . 



15. Pine, L., and H. A. Barker, /. Bacteriol., 68, 216 (1954) . 



16. Barker, H. A., and M. D. Kamen, Proc. Natl. Acad. Sci. U. S., 31, 



219 (1945). 



17. Barker, H. A., S. Ruben, and J. V. Beck, Proc. Natl. Acad. Sci. U. S., 



26, 477 (1940). 



18. Barker, H. A., B. E. Volcani, and B. P. Cordon, /. Biol. Chem., 17, 



149 (1948). 



19. Koepsell, H. J., and Marvin J. Johnson, J. Biol. Chem., 145, 379-386 



(1942) . 



