1910.] 



PUBLIC DOrUMKNT — No. 31. 



217 



This experiment would seem to indicate that the plants placed 

 under the benches before treatment were not benefited in this 



way. 



EXPEEIMEXT III. 



Cloudy Dnij Exposures, Deccmher 10. 

 Fumigation with .0:^ gram KCN per cubic foot; plants six 

 weeks old; humidity not taken till 8 p.m., when it was 81°; 

 good sunlight for four days before the test and for two hours in 

 the morning that day; all plants watered at 8.30 a.m. the day 

 of the test, but dry when treated ; half the plants of each variety 

 were sprinkled just before the test; conclusions drawn after 

 seventeen days' observation. It was dusk when the fourth set 

 M'as fumigated. 



Set Numbers. 



Time of exposure, 

 Lengtli of exposure. 

 Temperature of liouse (degrees), 

 Livingston normal, . 

 Livingston sprinkled, 

 Lorillard normal, 

 Lorillard sprinkled, . 

 Freedom normal, 

 Freedom sprinkle<l, . 



2.45 

 10 m. 

 68 

 TI 

 TI 

 TI 

 SI 

 TI 

 I 



3.15 

 20 m. 

 G7 

 TI 

 TI 



I 



I 



I 



I 



4.00 

 30 m. 

 65 

 TI 

 TI 

 TI 

 TI 

 TI 

 K 



5.00 

 45 m. 

 65 

 TI 

 TI 

 I 



K 



I 



TK 



