1910.] 



PUBLIC DOCUMENT — No. 31. 



217 



Tills experiment would seem to indicate that the plants placed 

 under the benches before treatment were not benefited in this 

 way. 



Experiment III. 

 Cloud// Day Exposures, Deccmher 19. 

 Fumigation with .02 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 

 was fumigated. 



^ime of exposure, 

 jcngth of exposure, 



emperature of Iiouse (degrees), 



ivingston normal, . 



ivingston sprinkled, 



orillard normal, 



lOrillard sprinkled, . 



reedoni normal, 



reedom sprinkk'd, . 



2.45 

 10 m. 

 GS 

 TI 

 TI 

 TI 

 SI 

 TI 

 I 



Set Numbers. 



3.15 

 20 m. 

 07 

 T 

 T 



3 



4.00 

 30 m. 

 G5 

 TI 

 TI 

 TI 

 TI 

 TI 



5.00 

 45 m. 

 G5 

 TI 

 TI 



•nn 

 /03) 



I 



gram 

 stages 

 als of 



