306 
Psyche 
[December 
3/12 
10 
Here the hostility was a bit more pronounced, 
many individuals “starting” with open mandibles, 
but no actual attacks occurring. (C). 
3/13 
11 
Identical reaction to 9. (C/D) 
3/14 
12 
Identical reaction to 9. (C/D) 
3/14 
13 
Identical reaction to 9. (C/D) 
3/14 
14 
Identical reaction to 9. (C/D) 
3/14 
15 
Identical reaction to 9. (C/D) 
3/14 
16 
Identical reaction to 9. (C/D) 
3/14 
17 
Identical reaction to 9. (C/D) 
Experiments Repeated on October 7, 1962 
10/7 
18 
Some “chasing,” but no attack. Some “startle” 
effect. (C) 
10/7 
19 
Identical to above. (C) 
(b) Reactions Between Adult Members of the Same Populations 
After Several Years of Separation—Intervals Greater than the 
Average Life-span of Workers. 
(bl) Ashton-Ashton 
On January 4, 1973 a collection of two groups of workers was 
made from under adjacent stones at a specifically marked location 
in Ashton Park. They were separately colonized in the laboratory, 
and kept entirely isolated, being maintained under identical condi¬ 
tions of environment and diet on adjacent tables but not being 
permitted contact until March 20, 1977, more than four years later. 
These colonies were labeled X and 4. 
On March 2, 1977, an additional collection was made from pre¬ 
cisely the same spot in Ashton Park, and brought to the laboratory. 
Tests among all three of these colonies were conducted on March 
20, 1977, with the following results: 
D X #4 Test #1—Complete compatibility (D) 
Test #2—Complete compatibility (D) 
D X X Test #1—Complete compatibility (D) 
Test #2—Complete compatibility (D) 
4 X X Test #1—Complete compatibility (D) 
Test #2—Slight initial “starting back”, followed by com¬ 
plete compatibility. (C) 
It is rather striking that after more than four years of separation, 
in one case between two populations in the laboratory maintained 
under identical regimens, in the other between these colonies and a 
