326 
ZOOLOGY: S. R. DETWILER 
TABLE 1 
A. Showing the results of transplanting the right anterior limb rudiment a number of segments 
{ASl, AS2, ASS, etc.) posterior to its normal position. 
B. Showing the results of transplanting an additional anterior limb rudiment to an embryo 
in which the normal limb rudiments have been left intact. HS3, HS4 and HS5 indicate 
the successive number of segments the additional limb rudiment was implanted posterior 
to the normal right anterior limb of the host. 
SERIES 
OPERATIONS 
POSITIVE EX- 
PERIMENTS 
NORMAL 
LIMBS 
REDUPLI- 
CATIONS 
FUNCTIONAL 
LIMBS 
NO FUNC- 
TION 
FUNCTION 
IMPAIRED 
FUNCTION 
PERFECT 
Cases 
Per 
cent 
Cases 
Per 
cent 
Cases 
Per 
cent 
Cases 
Per 
cent 
Cases 
Per 
cent 
Cases 
Per 
cent 
ASl 
25 
20 
19 
95 
1 
5 
20 
100 
0 
0 
1 
5 
19 
95 
AS2 
21 
18 
17 
94.5 
1 
5.5 
17 
100 
0 
0 
3 
16.7 
15 
83.3 
ASS 
24 
17 
13 
76.5 
4 
23.5 
15 
88.2 
2 
11.8 
4 
23.5 
11 
64.7 
A " 
AS4 
34 
29 
18 
67.0 
11 
33 
23 
79.3 
6 
20.7 
11 
37.9 
12 
41.4 
ASS 
35 
30 
11 
36.7 
19 
63.3 
20 
66.7 
10 
33.3 
16 
53.3 
4 
13.4 
AS6 
35 
29 
22 
75.9 
7 
24.1 
15 
51.7 
14 
48.3 
15 
51.7 
0 
0 
HS3 
10 
9 
2 
22.2 
7 
77.8 
9 
100 
0 
0 
6 
66.7 
3 
33.3 
B 
HS4 
30 
21 
8 
38.1 
13 
61.9 
11 
52.4 
10 
47.6 
11 
52.4 
0 
0 
HS5 
30 
25 
11 
44.0 
14 
56.0 
13 
52.0 
12 
48.0 
13 
52.0 
0 
0 
TABLE 2 
Showing the segmental nerve contribution to the anterior limb when implanted successively a 
number of segments {1 to 7) posterior to its normal position. 
POSITION OF 
SEGMENTAL NERVE CONTRIBUTION 
LIMB NUM- 
SERIES 
CASE 
BER OF SEG- 
MENTS POS- 
TERIOR TO 
3 
4 
5 
6 
7 
8 
9 
10 
11 
NORMAL 
Normal 
1 
0 
3 
4 
5 
ASl 
12 
1 
3 
4 
5 
AS2 
5 
2 
3 
4 
5 
AS2 
12 
2 
3 
4 
5 
AS3 
9 
3 
4 
5 
6 
AS3 
18 
3 
4 
5 
6 
AS4 
12 
4 
4 
5 
6 
7 
AS4 
27 
4 
6 
7 
8 
AS4 
26 
4 
5 
6 
7 
AS4 
30 
4 
5 
6 
7 
ASS 
25 
5 
5 
6 
7 
8 
9 
ASS. 
27 
5 
6 
7 
8 
9 
ASS 
23 
5 
7 
8 
9 
ASS 
30 
5 
6 
7 
8 
9 
ASS 
26 
5 
7 
8 
9 
AS6 
29 
6 
9 
9 
10 
AS6 
5 
6 
9 
10 
AS7 
5 
7 
10 
11 
