268 HENRY C. MCCOOK. 



hill is to present the steepest slope to the east, the longest slope to the 

 west; in other words, that the ants habitually build their mounds with 

 respect to the points of the compass, the variations being due to oppo- 

 sing circumstances. 



In order if possible to settle this question, I requested Mr. Kay to 

 bear it particularly in mind in his observations at Warrior's Mark and 

 Pine Hill. He reported the results as follows : 



Section 1. The surface sloping west. 



Number of hills with long slope North 



" South 4 



" East 3 



" West 46 



conical 2U 



facing East and West 1 



Total 74 



Section 2. Surface sloping north at an angle of about 20° depression 

 in one part, and about 10° depression in another. 



Number of hills, longest slope North 10 



" " " South 3 



" " " East 8 



" " " West 24 



" " conical 10 



Total 55 



Section 3. Surface sloping northwest and west. 



Number of hills, longest slope North 17 



" " " South 9 



" " " East 17 



" " " West 198 



" " conical 52 



Total 293 



The percentage of hills facing in the general direction, as compared 



with the others may thus be pri-sented in one view. 



Long slope W. E. N. conical. 



Section 1, slope W. .62 — — .27 



Section 2, slope N. .436 — .18 .18 



Section 3, slope N. W. and N. .675 .06 .06 .174 



It will be observed that in Section 2, where the land slopes north, 

 the general habit of the hill prevails, but the slope of the land has 



rently determined by a declivity. 1 hill E. apparently might as well have 

 faced W. 2 hills on a sharji E. slope of cutting looking with long slope W. in 

 spite of gravity. 1 hill on E. slope of gully, with long face W." 



