112 



INDEX 



Sterile conditions and cyanamide 

 decomposition, 33, 40, 43, 44, 50, 



51, 56, 57. 

 Sterilization of soil, eflfect on cyana- 

 mide decomposition, 44, 50, 56, 



57. 



Stickstoffkalk, definition, 4. 



Storage of Cyanamid, variation of 

 nitrogen during, 24-31. 



Strohmer, 85. 



Stutzer, 36. 



Substitution compounds of cyana- 

 mide, 13. 



Sugar beets, 85, 86. 



Sulphuric acid, action on cyana- 

 mide, 12. 



Summary on cyanamide decom- 

 position in soil, 57-59. 



Surrogate, 8. 



Temperature, effect on cyanamid 

 decomposition in soil, 43, 44 ; re- 

 action temperature, barium cy- 

 anamide, 2 ; calcium cyanamide, 

 2, 6. 



Tempering powders, 9. 



Thio-urea, 12. 



Top-dressing, use of Cyanamid 

 as, 87. 



Toxicity : of cyanamide, 34-36 ; of 

 fertilizers, 65-82. 



Tri-calcium phosphate in Cyanamid 

 mixtures, 91, 92. 



Tricyantriamide, 12. 



Ulpiani, C, chemistry of cyana- 

 mide, 12, 14, 16, 22, 23; decom- 

 position of Cyanamid in soil, 

 32-51, 57. 59; dicyandiamide, 

 34, 77. 



Umber, effect on cyanamide decom- 

 position, 52, 53- 



Underwriters' Laboratories, 102-106. 



Urea, assimilation of, 60 ; deter- 

 mination of, 22 ; formation from 

 cyanamide, 12, 15, 37, 43, 44, 51, 

 89 ; manufacture, 9 ; transforma- 

 tion by bacteria, 40, 44, 57. 



Volatility of calcium cyanamide, 6. 



Water : Effect on Cyanamid in 

 storage, 24-31 ; hazard of in fires, 

 103, 105, 106 ; hydrolysis of 

 cyanamide salts in, 14 ; solu- 

 bility of Cyanamid, 95-101. 



Weeds, destruction with lime-ni- 

 trogen, 86, 87. 



Weight, increase during storage of 

 Cyanamid, 24-31, 85. 



Wheat, 86. 



Willson, I. 



Zeolites, effect on cyanamide de- 

 composition, 49, 50. 



