350 On the Nest and Eggs of the Common Tern 
TABLE R. 
Direct Honiotyposis. ilotf ling with Mottling*. 
Mottling of First Egg. 
a 
h 
c 
d 
e 
/ 
f) 
h 
i 
Totals 
bc 
a 
4 
6 
4 
1 
7 
6 
3 
1 
32 
h 
6 
16 
15 
1 
11 
8 
5 
2 
1 
65 
o 
c 
4 
15 
388 
4 
148 
64 
29 
21 
14 
687 
o 
■1) 
d 
1 
1 
4 
8 
3 
3 
4 
24 
72 
e. 
7 
11 
148 
3 
106 
42 
24 
6 
3 
350 
f 
6 
8 
64 
3 
42 
78 
4 
4 
5 
214 
bo 
9 
3 
5 
29 
4 
24 
4 
60 
■I 
■2 
133 
h 
1 
2 
21 
6 
4 
2 
10 
46 
o 
i 
1 
14 
3 
5 
2 
14 
39 
Totals 
32 65 
687 
24 
350 
.,4 
133 
46 
39 
1590 
* In (ine two-egg clutch no mottling categories were provided. 
TABLE S. 
Direct Humotyposis. Values of Ground Colourf. 
Ground Colour Value in First Egg. 
3 
o 
A> 
B, 
Bo 
c. 
G, 
A 
^\ 
El 
^1 
E> 
0, 
G, H, 
h 
Ki 
/l2 
Totals 
A, 
30 
1 
13 
2 
6 
1 
4 
1 
3 
2 
1 
1 
1 
1 
1 
68 
A., 
] 
30 
6 
4 
1 
2 
48 
B, 
13 
32 
14 
2 
15 
4 
6 
5 
2 
3 
1 
4 
2 
4 
107 
6 
24 
14 
1 
7 
1 
3 
1 
1 
71 
6 
14 
22 
22 
3 
8 
2 
3 
1 
3 
2 
1 
1 
88 
■ a, 
1 
4 
2 
14 
31 
23 
15 
5 
2 
3 
2 
1 
106 
4 
1 
15 
22 
38 
4 
10 
1 
5 
1 
8 
1 
4 
4 
1 
2 
1 
122 
D; 
1 
2 
4 
1 1 
3 
23 
4 
92 
14 

22 
8 
4 
5 
4 
197 
E\ 
3 
6 
8 
10 
26 
6 
2 
7 
5 
1 
7 
75 
E, 
2 
5 
1 
15 
1 
14 
52 
14 
11 
1 
4 
3 

4 
127 
F, 
2 
2 
5 
6 
6 
2 
. 
2 
25 
F., 
1 
1 
? 
7 
3 
5 
1 
22 
2 
14 
50 
16 
2 
2 
2 
131 
1 
1 
8 
7 

2 
6 
2 
3 
3 
1 
2 
37 
.02 
1 
3 
4 
1 
3 
2 
8 
11 
16 
42 
12 
5 
3 
111 
2 
1 
5 
1 
2 
8 
3 
2 
24 
4 
3 
3 
4 
4 
4 
2 
3 
12 
26 
6 
1 
72 
h 
1 
1 
2 
4 
1 
3 
3 
2 
4 
21 
h 
1 
2 
1 
5 
3 
2 
1 
5 
6 
60 
9 
95 
1 
2 
1 
2 
2 
2 
4 
14 
1 
1 
1 
4 
4 
2 
3 
1 
9 
22 
49 
Totals 
68 
48 
107 
71 
88 
106 
122 
197 
75 
127 
25 
131 j 37 
111 
24 
72 
21 
95 
14 
49 
1588 
t The total number of pairs of eggs was 1592 ; from this table are omitted the four pairs which arise 
from one blue egg in a three-egg c'utch. 
