1919] Mclndoo: Olfactory Sense 69 



Oil of thyme: 



4 raised head quickly. 1 moved away quickly. 

 3 moved head and worked 1 raised thorax quickly. 



mouth parts. 



1 moved slightly. 



Reaction time 2 to 10 seconds, average 4.5 seconds. 

 Oil of wintergreen: 



3 moved head slightly. 1 worked mouth parts. 



2 raised head quickly. 1 moved head sidewise. 



2 moved away quickly. 1 raised head and thorax slowly. 



Reaction time 2 to 30 seconds, average 7.5 seconds. 

 Dried leaves of pennyroyal: 



5 moved slightly. 1 moved head slightly. 



2 raised head and thorax slowly. 1 moved head and thorax sidewise and bit 



1 moved away slowly. wire-screen bottom of case. 



Reaction time 2 to 25 seconds, average 7.4 seconds. 

 Dried leaves of spearmint (odor very weak): 



4 moved slightly. 2 moved away quickly. 



2 raised head cjuickly. 1 moved head slightly. 



1 moved slightly. 



Reaction time 3 to 15 seconds, average 6.4 seconds. 



Large Tussock- Moth Larv.ae {Hemerocampa leucostigma S. and A.) 



Oil of peppermint: 



6 moved slightly. . 1 showed no response. 



2 moved away. 1 raised head and thorax quickly. 



Reaction time 2 to 00 seconds, average 17.3 seconds. 

 Oil of thyme: i 



5 moved slightl}'. 1 showed no response. 



1 raised head. 



Reaction time 2 to 60 seconds, average 13.1 seconds. 

 Oil of wintergreen: 



3 raised head. 1 moved head sidewise. 



2 moved slightly. 1 moved away slowdy. 



2 jerked head backward. 1 showed no response. 



Reaction time 2 to 60 seconds, average 16.3 seconds. 

 Dried leaves of pennyroyal: 



4 moved away slowly. 2 raised head. 



3 moved slightly. 1 showed no response. 



Reaction time 2 to 60 seconds, average 23.2 seconds. 

 Dried leaves of spearmint (odor very weak): 



6 moved away. 2 showed no response. 

 2 moved slightly. 



Reaction time 5 to 60 seconds, average 30 seconds. 

 Protruded thoracic glands of larvae {Papilio polyxenes). 



5 moved slightly. 2 showed no response. 

 2 moved away slowly. 1 raised head. 



Reaction time 2 to 60 seconds, average 22.8 seconds. 



Large Army Worms {Cirphis imipuncta Haw.) 



Oil of peppermint: 



5 raised head quickly. 3 raised head quickly and waved it 



2 raised head slowly. sidewise. 



Reaction time 2 to 5 seconds, average 2.9 seconds. 

 Oil of thyme: 



4 raised head quickly and moved 3 raised head quickl3^ 



sidewise. 3 raised head slowly. 



Reaction time 2 to 5 seconds, average 2.5 seconds. 



