DEPARTMENT REPORTS. 57 



II. Amnionification. 



III. Nitrification — The nitroso and nitro processes. 



1. Conditions influencing. 



a. Physical. 



b. Reaction. 



c. Temperature. 



d. Supply of oxygen. 



e. Anu)unt of organic matter present. 



f. Moisture. 



IV. Denitrification. 



1. Factors influencing the loss of nitrogen. 



V. Action of Micro-Organisms upon the Mineral Constituents of the 

 Soil. 



VI. Sewage Disposal Studies. (See "Sanitary Studies" under "Hy- 

 gienic Bacteriology.") 



F. PLANT. 



I. Nitrogen Accumulators. 



1. Micro-organism involved. 



2. Cultural characteristics. , 



3. Formation of nodules. 



4. Character of nodules. 



5. Conditions under which they form. 



C>. Determination of nitrogen accumulations. 

 7. Significance of nodules. 



IT. Bacterial Diseases. 



1. Kinds. 



2. INIicro-organisms found as causal agents. 



3. Cultural characteristics. 



4. Resistance of micro-organisms. 



5. Persistency. 



(j. Methods of treatment. 

 7. Pathology, 



III. Bacterial Decomposition of Fruits, Vegetables and Other Plant 

 Substances. 



1. Nature of decomposition. 



2. Micro-organism studies. 



3. Conditions favoring development. 



4. Control. 



5. Structural changes. 

 8 



