1910.] 



PUBLIC DOCUMENT — No. 31. 



223 



Experiment XII. 



Night Exposures, January 10. 

 Fmnioation with .02 gram KCN per cubic foot; plants nine 

 weeks old; house humidity, 61°; amount of sunlight that day, 

 four hours; plants watered at 8 a.m., dry when treated; sets 

 treated in moonlight; conclusions drawn after five days. 



rime of exposure, 

 Length of exposure, . 

 Temperature of house (degrees), 

 Livingston, .... 



l,orillard 



freedom 



7.15 

 20 ni. 

 65 

 X 

 SI 

 SI 



Set Numbers. 



S.15 

 30 m. 

 67 

 SI 

 SI 

 SI 



9.15 

 45 m. 

 67 

 C 

 C 



I 



5.05 



Ih. 

 65 

 C 



I 



1 



EXPEEIMENT XIII. 



/ NigU Exposures, January 12 and 13. 



Fumigation with .02 gram KCX per cubic foot; plants nine 

 greeks old; weather cloudy the day of treatment of first two 

 ^ets, clear the day of treatment of the third set; plants watered 

 it 8.30 to 9 A.^r., dry when treated; first set treated at dusk, 

 he other two in starlight; conclusions drawn after five davs. 



Set Numbers. 



3 



me of exposure, 



'.ngth of exposure, . 



mperature of house (degrees), 



imidity before (degrees), 

 umidity after (degrees), 

 iyingston, .... 



iirillard 



ree<loni, ..... 



5.30 

 IV-h. 



60 

 65 

 80 

 SI 

 SI 

 TI 



3 



7.25 

 2h. 



65 



il- 



4r th 



IS 



7.30 



2 1). 

 62 

 65 

 80 



Bial Bulletin 



IS, p. ,50, 1903) 



im to .01 gram 



itrol most stages 



at intervals of 



