31 



minutes), ants six-eighths to seven-eighths of an inch distant, about u 

 third of them outside. February 27, 8 a. m., about four-fifths of the 

 ants are under the cover at a distance from the repellent of three- 

 eighths to four-eighths of an inch. 4 : 50 p. m. (3 days and nearly 8 

 hours), five-sixths of the ants now under the cover, the nearest three- 

 eighths to four-eighths of an inch from the repellent. Experiment 

 closed. 



Experiment 5775, Oil of Lemon zvith Wood Ashes. — Feljruary 24, 

 11:10 a. m., wood ashes soaked in oil of lemon, allowed to dry, and 

 moistened with water, placed at center of nest. Collection of larvce a 

 fourth of an inch from the repellent. Ants soon leave the immediate 

 vicinity, deserting the larvcC. 1 1 : 30 (20 minutes), the nearest ants are 

 five-eighths to six-eighths of an inch from the ashes. They have not 

 gathered up the deserted larvse. About two-thirds of them are under 

 the cover distributed as shown in the accompanying sketch (Fig. 9) 



Fmc. 9 



4: 50 p. m. (5 hours, 40 minutes ), ants are now about seven-eighths of 

 an inch from the ashes, but the deserted larvcC have not been recovered 

 (Fig. 10). February 25, 8 a. m. (20 hours, 50 minutes), the ants are 

 about three-eighths of an inch from the repellent, deserted larvae not 

 recovered. At 9 : 30 the ants are withdrawn to about three-fourtlis of 

 an inch. At 11 a. m., 3:15, and 5 p. m. (29 hours, 50 minutes), 

 same appearance. 7:15 p. m. (31 hours 5 minutes), ants about seven- 

 eighths of an inch from the repellent, and a larger number than before 

 are outside the nest. February 26, 8 a. m., ants five-eighths to six- 

 eighths of an inch distant from the repellent. 3 : 30 p. m., ants with- 



