304 Report of THE DEPARTMENT OF ENTOMOLOGY OF THE 
FORMULA 1-1144-114, 
Time 
Time chem. 
KCN. H,SO,. H,O. treated. action. Results, 
Ozs Fl ozs. Fl. ozs. Min. Min. 
rea) 8.75 8.75 80.0 16.0 KCN ¥n several pieces. Chemical action 
very slow, considerable brown sedi- 
ment. Com. acid. 
FORMULA 1-114-21%. 
150 8.75 17.5 35.0 5.0 KCN powdered, action violent enough 
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. 
au 8.75 17.5 385.0 4.0 Conditions and results same as above. 
7.0 9.0 18.0 385.0 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 1-114-314, 
11.25 14.0 36.0 30.0 6.0 Com. acid. 
11.25 14.0 386.0 80.0 8.0 Com. acid. 
11.25 14.0 36.0 30.0 Chem. action complete, com. acid. 
11.25 -14.0° 86:07 30:0 Chem. action complete, com. acid. 
11.25 . 14.0 -386.0' 30:0 Chem. action complete, com, acid. 
FORMULA 1-14-3354. 
4.0 5.0 15.0 380.0 Chem. action complete, com. acid. 
4.0 5.0 15.0 40.0 Chem. action complete, com. acid. 
4.0 OU) rk ae Chem. action complete, com. acid. 
7.0 8.75 26.25 85.0 7.0 IKCN in one piece, chem. pure acid. 
7.0 8.75 26.25 80.0 7.5 KCN in two pieces, chem. pure acid 
7.0 8.75 26.25 30.0 38.0 KCN powdered, chem. pure acid. 
12.0 . 15:0 —45.0°> 30:0: 12:0 , 
FORMULA 1—1%4—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 KON 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 1-11444%. 
7.0.7) 20 GSB LISS 9.0 IKCN in one piece. 
These tables show that where large pieces of potassium 
eyanide were used in the formula 1-1-2, the action was too slow 
and the by-product crystallized within a short time. In some 
