218 



EXPERIMENT STATION. 



[Jan. 



Jan. 



In addition to the effects noted, the sprinkled plants de- 

 veloped "white spots where the droi:)s of water stood, and in 

 general were in worse condition than the others. 



Experiment IV. 



Day Exposures during Bain, Snowstorm and Cloudy Wcailicr, 



January 12 and 13. 



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

 weeks old ; set 1 treated during a rainstorm ; sets 2 and 3 during 

 a snowstorm and set 4 during cloudy weather ; no direct sunlight 

 either day ; plants of set 1 watered the day before the test ; the 

 others, the morning of the test, but dry when treated ; conclusions 

 drawn after three days for the first set ; after six days for the 

 second and after nine days for the third and fourth sets. 



nber 



i SIX 



iO°; 

 airs ; 

 sets, 

 ; all 

 reat- 

 . the 

 set. 



'ers. 



Set Numbers. 



2 



f<.30 

 1 li. 

 67 



BI 



Time of exposure, 

 Length of exposure, 

 Temperature of house (degrees), 

 Humidity before (degrees). 

 Humidity after (degrees), 

 Livingston, .... 



Lorillard 



Freedom 



10.30 

 1.30 m. 

 65 

 62 

 80 

 K 

 K 

 K 



9.00 



1.30 m. 

 6.5 

 55 

 84 

 BI 

 BI . 

 BI 



11.00 

 1 h. 

 55 

 65 

 8-2 

 BI 

 BI 

 BI 



1.15 



1 h. 

 68 

 67 

 SO 



I 



I 



I 



Experiment V. 



Niglit Exposures, December 13. 

 Eumigation Avith .005 gram KCN per cubic foot ; plants si: ^^^"^ 

 weeks old ; house humidity, 60° ; six hours of sunlight the day o' ^ ^ 

 treatment, but cloudy the previous week; weather cloudy duriu''"' 

 the treatment of the first three sets; moonlight during the other' *^-'- 



+W0 ; treatment be<»'an on set 1 as soon as it Avas really dark 



!i to 



Ave6i3vatered at 9 a.ai., dry when treated ; half the plants of 



third sety ^^^^ been placed under benches for thirty hour.' 



nt ; conclusions drawn three weeks after treat 



si 



V- 



r 

 it 



