1914.] NATURAL SCIENCES OF PHILADELPHIA. 299 



SO the word "arose" is to be interpreted as meaning that the insect 

 gets up and stands on its feet. In the averages of reaction times 

 the probable error is jiresumably high. It has not been calculated 

 since slight differences in reaction time are not considered as signifi- 

 cant in the discussion of results. All anthropomorphic terms are 

 put in quotation marks. 



1. Winged females of For7mca. 



Oil of peppermint : 



10 vibrated antennae. 



7 vibrated antennae and moved away. 



5 moved away quickly. 



2 arose quickly. 



1 jumped toward odor. 



Reaction time 2 seconds, average 2.00 seconds. 



Oil of thyme: 



8 vibrated antennae. 



8 vibrated antenme and moved aw^ay. 



3 arose quickly. 



3 moved away quickly. 



2 turned around quickly over odor. 

 1 moved slightly. 



Reaction time 2-3 seconds, average 2.04 seconds. 



Oil of wintergreen: 



12 vibrated antennae. 



6 vibrated antennae and moved away. 

 5 arose quickly. - 



1 vibrated antennae and arose quickly. 



1 moved away quickly. 



Reaction time 2-3 seconds, average 2.32 seconds. 



Honey and comb: 



12 vibrated antennae. 

 5 vibrated antennae and turned around over odor. 



3 vibrated antennae and tried to get through bottom. 



2 vibrated antennae and moved away. 



1 vibrated antennte and moved toward odor. 



1 moved toward odor. 



1 moved quickly and tried to get through bottom. 



Reaction time 2-5 seconds, average 3.00 seconds. 



