o 



0-1 liErORT OF THE iJErAHTMEXT OF ENTOMOLOGY OF THE 



FORMULA 1-11/4-114. 



Time 

 Time cheui. 

 KCX. HjSO*. H;,0. treatefl. action. ResnltB. 



Ozs. Fl ozs. Fl rzH. Min. Min. 



7.0 8.75 8.75 30.0 IG.O KCN fti several pieces. Chemical action 



very slow, considerable brown sedi- 

 ment. Com. acid. 



FORMULA 1-114-21^. 



7.0 8.75 17.5 35.0 5.0 KCN powdered, action violent enongli 



to throw contents out of generator. 



By-product crystallized in 1 hour. 



Com. acid. 

 7.0 8.75 17.5 35.0 5.5 Conditions and results same as above, 



chemically pure acid. 

 7.0 8.75 17.5 35.0 4.0 Conditions and results same as above. 

 7.0 9.0 18.0 35.0 6.5 KCN no larger than hickory nuts, no 



crystallization. 

 7.0 9.0 18.0 35.0 10.0 KCN in one piece. No crystals. 



FORMULA 1-11/4-3%. 



Com. acid. 



Com. acid. 



Chem. action complete, com. acid. 



Chem. action complete, com. acid. 



Chem. action complete, com. acid. 



FORMULA 1-11/4-3%. 



4.0 5.0 15.0 30.0 Chem. action complete, com. acid. 



4.0 5.0 15.0 40.0 Chem. action complete, com. acid. 



4.0 5.0 16.0 40.0 Chem. action complete, com. acid. 



7.0 8.75 26.25 35.0 7.0 KCN in one piece, chem. pure acid. 



7.0 8.75 26.25 30.0 7.5 KCN in two pieces, chem. pure acid 



7.0 8.75 26.25 30.0 3.0 KCN powdered, chem. pure acid. 



12.0 15.0 45.0 30.0 12.0 



FORMULA 1 11/^ — ^3. 



7.0 10.5 21.0 30.0 4.0 KCN powdered, action violent enough 



to throw contents out of generator. 



7.0 10.5 21.0 35.0 6.0 KCN in one piece. First period of 



action uniform. 



7.0 10.5 21.0 35.0 6.0 KCN in one piece. First period of 



action uniform. 



FORMULA 1-11/^1/4. 



7.0 10.5 31.5 35. 9.0 KCN in one piece. 



Those tables show that where large pieces of potassium 

 ovanide were used in the formula 1-1-2, the action was too slow 

 and the by-product crystallized within a short time. In some 



