1925 ] 
Growth of Ant Mounds 
83 
MEASUREMENTS 
CALCULATIONS 
Dates 
Height 
£ 
W 
Width 
CQ 
fc 
E. W. 
Circumference in 
inches 
Contents 
cu. ft. 
Increment 
cu. ft. 
Duration 
months. 
Increment 
j per month. 
| Increment per 
j working month. 
| Increment per 
1 working day in 
cu. in. 
1906-7-7 
3 
9 
.012 
.012 
7 
.001 
.006 
.345 
1906-11-13 
4-5 
15 
.151 
.139 
4 
.034 
.046 
2.699 
1907-10-24 
6 
18 
.291 
.013 
11 
.001 
.028 
1.636 
1908-6-12 
8 
12 
18 
21 
.564 
.273 
7 
.039 
.136 
7.733 
1908-10-18 
9 
26 
.912 
.348 
4 
.087 
.087 
5.011 
1909-12-31 
.518 
14 
.037 
.103 
5.922 
1910-12-31 
.444 
12 
.037 
.088 
5.068 
1911-12-31 
.444 
12 
.037 
.088 
5.068 
1912-12-31 
.444 
12 
.037 
.088 
5.068 
1913-12-31 
.444 
12 
.037 
.088 
5 . 068 
1914-8-7 
12 
19 
38 
42 
3.72 
.296 
8 
.037 
.095 
5.472 
1915-9-19 
16 
24 
47 
52 
7.35 
3.63 
13 
.279 
.726 
41.817 
1916-6-18 
16 
21 
50 
53 
7 . 359 
.009 
9 
.001 
.004 
.230 
1917—12-31 
.874 
18 
.048 
.006 
.345 
1918-12-31 
.586 
12 
.048 
.009 
.518 
1919-4-13 
15 
24 
58 
54 
9.012 
.193 
4 
.048 
.193 
11.116 
1919-10-18 
18 
28 
63 
60 
13.048 
4.036 
6 
.672 
.800 
46.08 
1920-7-25 
/ 18 
57 
54 
10.029 
-3 019 
9 
-.35 
-.115 
-6.624 
\20 
30/ 
1920-9-19 
21 
28 
60 
57 
192 
12.009 
1.980 
2 
.990 
.990 
57.024 
1921-8-21 
21 
30 
76 
72 
216 
20.945 
8.936 
11 
.812 
1.789 
102.846 
1922-7-20 
23 
30 
81 
79 
25.44 
4.495 
11 
.408 
1.124 
64 . 742 
1922-9-10 
204 
32 
87 
73 
246 
25.44 
0.000 
2 
.000 
0.000 
00 . 000 
1923-7-8 
19 
29 
84 
76 
23.04 
-2.40 
10 
-.240 
-.800 
-46.08 
1924-1-27 
16 
27 
86 
75 
242 
20.988 
-2 . 042 
6 
-.340 
-1.021 
-58.809 
1924-7-20 
19 H 
33 
85 
88 
270 
29.813 
8.825 
6 
1.470 
2.941 
169.401 
(96) 
they so closely agree with those of July, some slight falling off 
being due to a defect near the north summit caused by human 
feet. This table shows all the measurements taken in the years 
1906-1924 inclusive, as well as some calculations of bulk reckoned 
on the assumption that the mound may be a conical figure. 
Graphs have been made to illustrate the main facts of the table. 
They show that the growth in height and in diameter taken from 
the measurements of the last part of each year, rises steadily for 
a few years as two nearly parallel curves and then the heighth 
curve becomes more flat and with indented summit while the 
width curve continues to a much greater heighth and with no 
