30 



under the cover, but at the same distance from the repellent as before. 

 May 31, 8 a. m.. and 3 : 30 p. m., situation unchanged. 6 p. m. (4 days 

 and Sj/s hours), ants same distance from sand, but more dispersed 

 (Fig. 7, C). June 1, the ants move about somewhat but maintain their 

 distance from the repellent all day long. The same record was made 

 for June 2, at 8 a. m. and 3 p. m. (6 days), when the experiment was 

 closed. 



Experiment 5774, Oil of Lemon and Bone Meal. — February 24, 

 9:10 a. m., some bone meal soaked with oil of lemon was allowed to 

 dry, then moistened with water, and placed at the center of the nest. 

 Most of the ants escaped from under the cover, but a third of them re- 

 mained under one corner with the larvse, which were seven-eighths of 

 an inch from the bone meal (Fig. 8). In an hour and fifty minutes 



.-^f"^^^ 





'Vr?,~' ■ 



.Larfje 



h^^ 



■^'iv'.'.W,, 



H 



Fig. 8 



the ants were about five-eightlis of an inch from the meal, and nearlv 

 half of them were under the cover. 3 : 50 p. m., about half the ants are 

 under the cover, the nearest half an inch from the fertilizer. 4: 50 (7 

 hours, 40 minutes), situation unchanged. February 25, 8 a. m., most 

 of the ants are under the cover, the nearest about half an inch from the 

 fertilizer. 9:30 (24 hours, 10 minutes), ants withdrawn to about 

 three- fourths of an inch. 11 a. m., situation unchanged except that 

 fewer of the ants are outside on the base. 3:15 and 5 p. m., same ap- 

 pearance. 7:15, ants were about seven-eighths of an inch from the re- 

 pellent, and about half were now outside the nest. February 26, 8 

 a. m., ants from half an inch to five-eighths of an inch distant from the 

 repellent this morning. 3:30 and 4:50 p. m. (2 days. 7 hours, 40 



