12 BULLETIN 907, U. S. DEPARTMENT OF AGRICULTURE. 
Resulis. 
: ! Condition after fumi- 
i gation. 
4 
| | s Sade, | -s 
fe fe «4 
eee 
{ 
| Foliage drenched with water--.....- 2 
| Poliaqne dry?-2i= Set SS as Z 
EXPERIMENT 12. 
Condition during fumigation, dark, 64°-65° F. 
Dosage, 14 ounces. KCN. 
Date, March 18, 1915, 10.50-11.50 a. m. 
Planis in each iest, 2; total, 30. 
Remarks: Fumigatorium contained ice to maintain a low temperature. This 
absorbed much gas. 
Resulis. 
Condition after fumigation. | 
, | Shade,| Dark, | Shade, 
O° F. | 60° F. | 90° F.4/ s8° Fi ’ 
| Dark GOONS 2 = ire aes 3 | 3 
Sida ents ee eee ee ee 
Sanz 70 Won eee ee ee ae 
| 
| | 
= | j i 
i Temperature maintaimed 4 hours a alter treatment. 
2 Maximum temperature for Gay, 77° F- 
EXPERIMENT 13. 
Condition during fumigation, dark 66°-68° F. 
Condition before fumigation, shade, 66° F 
Dosage, 1 ounce NaCN. 
Date, November 17, 1917, 9-10 a. m. 
Plants in each test, 4; total, 12. 
Remarks: Plant foliage tender. : 
Resulis. 
Condition aiter fmmigation. | 
——————————— 
Shade, 68° F. | Shade, 79° F2| Sun, 7° F2 peoes, 
eae See | 
| 
g° ~ | ee eee 
q 
| / 
| | 
1 At equal tempersiures throughout the day. Maximum 98° F_ ai 2 p.m. 
All foliage on plants in the sunshine was destroyed, while those in the shade exhib- 
ited injury only to the tenderest growth. 
