1910.] 



PUBLIC DOCUMENT — No. 31. 



221 



Set Numbers. 



Time of exposure, 

 Lengtli of exposure, . 

 Temperature of house (degrees) , 



Livingston, 



Lorillard, 



Freedom 



ExPEKI^MENT IX. 



Night Exposures, January 9. 



Fumigation with .015 gram KCN per cubic foot; plants 

 eight weeks old; house hnmidity, 49°; amount of sunlight 

 that day, six hours; plants watered at 8 A.:\r., dry when treated; 

 treatment during moonlight ; conclusions drawn after one week. 



Set Numbers. 



S 



Time of exposure, 

 Lengtii of exposure, . 

 Temperature of iiouse (degrees), 

 Livingston, .... 



Lorillard, 



Freedom 



5.15 

 30 m. 

 58 

 SI 

 SI 

 SI 



7.00 

 45 ni. 

 GS 

 S[ 

 SI 

 SI 



8.30 

 1 h. 



65 



C 



C 



c 



Experiment X. 



Night Exposures, January SI. 

 Fumigation with .015 gram KCN per cuhic foot; plants 

 eleven weeks old, rather weak, tall and spindling; amount-, 

 sunlight that day, one hour; plants watered at 8.30 a.^ 



when treated; moonlight during the treatment; c-r, n ,. 

 „„, ^ ^ '.ti Bulletin 



., p. 50, 1903) 



.. im to .01 gram 



trol most stages 



at intervals of 



drawn after four days. 



