190 Transformation of Nitrogen 



2. Bonazzi, A., On nitrification. V. The nicclianism of ammonia oxidation, 

 /. Bact., 8:343-363, 1923. 



3. Bright, J. W., and Conn, II. J., Ammonification of manure in soil, N. Y. Agr. 

 Expt. Sta. Tech. Bull. 67, 1919. 



4. Corbet, A. S., The formation of hyponitrous acid as an intermediate com- 

 pound in the biological or pliotochcmical oxidation of ammonia to nitrous 

 acid, Biochem. J., 28:1575-1582, 1934. 



5. Dhar, N. R., Bhattacharya, A. K., and Biswas, N. N., Influence of liglit on 

 nitrification in soil, /. Indian Chem. Soc, 10:699-712, 1933; Nature, 133: 

 213-214, 1934. 



6. Dhar, N. R., and Rao, G. C, Nitrification in soil and in atmo.sphcre. A 

 photochemical process, J. Indian Chem. Soc, 9:81-91, 1933. 



7. Doryland, C. J. T., Tlie influence of energy material upcm the relation of 

 soil microorganisms lo soluble plant food, N. Dakota Agr. Expt. Sta. Bull. 

 116, 19J6. 



8. Gainey, P. L., Parallel formation ol carbon dioxide, ammonia, and nitrate 

 in soil, Soil Sci., 7:293-311, 1919. 



9. Kluyver, A. J., llw Chemical Activities of Microorganisms, University of 

 London Press, 1931. 



10. McLean, II. C, and Wilson, G. W., Ammonification studies with soil 

 fungi, N. J. Agr. Expt. Sta. Bull. 270, 1914. 



11. Ncller, J. R., Studies on the correlation between the production of carbon 

 dioxide and the accumulation of ammonia by soil organisms, Soil Sci., 5:225- 

 242, 1918. 



12. Osborne, T. B., The Vegetable Proteins, Longmans, Green & Co., London, 

 1924. 



13. Rao, G. G., and Dhar, N. R., Photosensitized oxidation of ammonia and 

 ammonium salts and the problem of nitrification in soils. Soil Sci., 31:379- 

 384, 1931; 38:143-159, 183-189, 1934. 



14. Taber, S., The production of saltpeter in the south during tlic (>i\il War, 

 Science, 96:535-536, 1942. 



15. Temple, J. C., Nitrification in acid or non-basic soils, Cleorgia Agr. Expt. 

 Sta. Bull. 103. 1914. 



16. Thorne, C. E., Farm Manures, Orange Judd Publishing Co., New York, 1914. 



17. Voorhees, E. B., and Lipman, J. G., A review of investigations in soil bac- 

 teriology, U. S. Dept. Agr. Office Expt. Sta. Bull. 194, 1907. 



18. Waksman, S. A., and Lomanitz, S., Contribution to the chemistry of decom- 

 position of proteins and amino acids by various groups of microorganisms, 

 J. Agr. Research, 30:263-281, 1924. 



19. Waksman, S. A., and Starkey, R. L., The decomposition of proteins by 

 microorganisms with particular reference to purified \egetable proteins, 

 J. Bad., 23:405-428, 1932. 



20. Workman, C. H., and Wood, II. G., On the metabolism of bacteria, Botan. 

 Rev., 8:1-68, 1942. 



