216 



EXPERIMENT STATION. 



[Jan. 



Experiment I. 



Day Exposures with Direct Sunliglit. 



First four sets treated March l-l; fifth set treated December 

 14. 



Eumigation with .005 gram KCN per cuhic foot ; plants six 

 weeks old; hinniditj for first four sets, G5° ; for fifth set, 60° ; 

 amount of sunlight (March 14) for first four sets, four hours; 

 for fifth set (December 14), five hours; plants of first four sets, 

 watered the morning of the test ; of the fifth the day before ; all 

 sets dry when treated ; conclusions drawn five days after treat- 

 ment with the first three sets, eight days afterward with the 

 fourth set and about three weeks afterward with the fifth set. 

 The suidight was not as strong for the fifth set as for the others, 

 it being December, while the other tests were in March. 



Set Numbers. 



Time of exposure, . 

 Length of exposure, 

 Temperature of house (degrees), 

 Livingston, .... 



Lorillard 



Freedom 



2.28 

 10 m. 

 68 

 B 

 N 

 B 



3.00 

 20 m. 

 65 

 BB 



B 



B 



3.30 



30 m. 



631,1. 



BB 



SB 



BB 



4.10 

 4,5 ni. 

 65 



BB 



BC 



BC 



8.30 

 1 h. 



67 

 VBI 

 VBI 

 VBI 



EXPEKIMENT IT. 



Day Exposures icith Direct Sunlight. 



First two sets treated December 14 ; third set March 14. 



Fumigation with .01 gram KCN per cubic foot; plants six 

 weeks old; humidity, 79° ; aimmnt of sunlight for first two sets 

 five hours; for third set four hours; all plants watered at 8.30 

 A.M. the day of the test, but dry when treated; one plant of 

 each variety placed under a l)en('li in the house for fourteen to 

 nineteen hours before treatment; conclusions drawn after three 

 weeks for the first and second sets and after one week for the 

 third set. 



