642 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



nitrogen compounds, particularlj' derivatives of cyananidde. Chemi- 

 cal and biolo<,acal studies have also been made on the transformations 

 of cj^anamide in the soil. 



In connection with the utilization of commercial cyanamide as a 

 fertilizer, the following investigations were completed during the 

 past year: The stability of cyanamide on storage, the reactions which 

 fimit"^ the use of cyanamide in fertilizer mixtures containing acid 

 pliosphate, and the possibility of utilizing cyamamide in admixture 

 with calcined phosphate. The results of these studies are now l)eing 

 prepared for publication. 



It is evident from the foregoing outline of the work and accom- 

 plishments of the laboratory that the field of nitrogen fixation and 

 utilization is an exceedingly large one. Thus, improvement in the 

 existing processes of nitrogen fixation, the investigation of proposed 

 but untried processes, the discover}^ and development of entirely new 

 processes, and the investigation and transformation of nitrogen com- 

 pounds to make them most useful, present almost limitless possibili- 

 ties for fruitful research. 



