Table 53. — Colony h: Central Area IV colony inhabiting Boxes 29, 30, 33, 34, and 36. April-May 1949 
Rat’s number 
Place of birth 
Maturity 
index 
May 
weight 
May 
wounds 
Surviving young (0) 
Placental 
scars 
Males: 
775 
SAB 
1.64 
528 
11 
777 
SAB 
11.17 
446 
10 
725 
SAB 
1.83 
466 
11 
669 
NAB 
11.00 
468 
24 
Mean 
1.91 
477 
13. 5 
Females: 
76 
SAB 
III. 00 
356 
3 
No 
o 
475 
SAB 
III. 00 
286 
2 
No 
16 
58 
Area III 
11.67 
405 
12 
No 
0 
60 
Area III 
11.56 
380 
10 
No 
0 
Mean 
11.81 
357 
6. 8 
4.0 
Burrow by male 49 and from Area I by male 690. 
Because of this situation, it is highly unlikely that 
they contributed much to the fertilization of females 
inhabiting these, the most favored localities. 
Although they formed an all-male colony, as was 
colony k, their more favored status is indicated 
by their higher homogeneity index (table 57) as 
well as by the fact that their mean number of 
wounds was 7.4 in contrast to 20.4 for colony k. 
Table 54. — Colony i: Areas I- IV marginal colony 
{including Boxes 31, 32, 35) April-May 1949* 
Rat’s 
Number 
Place of 
birth 
Maturity 
index 
May 
weight 
May 
wounds 
Males: 
67 
SAB 
1.17 
530 
9 
699 
SAB 
1.86 
446 
7 
683 
SAB. . 
11.14 
386 
2 
909 
SAB. . 
1.00 
468 
o 
376 
SAB 
11.40 
402 
19 
479 
SAB. . 
11.70 
450 
4 
732 
Area I 
II. 00 
490 
9 
735 
Area I 
III. 00 
374 
6 
799 
Area I 
111.00 
446 
9 
852 
Area I 
11.33 
411 
1 
739 
Area I 
1.17 
500 
18 
760 
Area I 
II. 00 
534 
3 
429 
Area IV ... . 
III. 00 
306 
9 
Mean . . 
11.14 
442 
7.4 
*No females. 
Colony k: Passage 3 Burrow and the East Alley Ladder 
{table 55). 
The relationship of this colony to colony h has 
already been discussed. The burrow by Passage 3 
originally began as a way station for rats traveling 
between the North Alley Burrow and Area III. 
It soon began to attract, for overnight residence, 
individuals being excluded from these localities. 
As soon as this happened, the burrow began to 
decay and the tunnels and nest cavities became a 
stinking mire. Nevertheless, it was inhabited by 
individuals who were becoming social outcasts and 
were forming colony k. During late January 1949 
I left a ladder lying on the ground in the East 
Alley opposite Passage 6. Immediately some of 
the members of colony k began to utilize it as a 
place of harborage. Here they remained under 
the paint platform with so little cover that they 
could readily be seen even when the temperature 
was near zero. There was never any attempt by 
this group of males to construct a burrow or more 
than a padlike nest. As in colony g, there was 
indication that increased stress inhibits burrow 
construction and nest building activities. Other 
than the large number of wounds characterizing 
these rats the only other point of note was that 
five of the seven surviving males born in Area III 
and excluded from it became members of this 
group. 
213 
