24 
The extent and productiveness of the bed are shown in the following 
table : 
Oyster Growth on Trout Shoal Rock. 
Character of growth of market oysters. 
Area. 
Oysters per acre. 
Estimated 
content of 
market 
oysters. 
Seed. 
Market. 
Scattering 
Acres. 
25 
14 
90 
Bushels. 
165 
118 
21 
Bushels. 
44 
30 
8 
Bushels. 
1,100 
420 
720 
Very scattering 
Depleted 
Total 
129 
2,240 
There is no dense growth within the meaning of the definition 
adopted in this report — that is, bottom on which 8 or more bushels 
of market oysters may be tonged by a man working 9 hours. There 
are two areas of scattering growth which lie as strips along the line 
of a shoal largely exposed at low water. These areas are sufficiently 
productive to yield from 5 to 10 bushels of market oysters per day 
to the tonger, the average being about 7 bushels. 
The only other productive bottom is a very scattering area occu- 
pying the central and eastern portion of the rock, from the ridge to 
the deep water tying between this shoal and High Shoal. On this 
area a tonger can average a little over 3 bushels of oysters per day. 
Depleted areas lie on each side of the shoal, that on the western side 
being more extensive and continuous with the depleted area of Dog 
Shoal rock. On these areas a tonger could take hardly a bushel of 
market oysters per day, although there are spots a little more pro- 
ductive. On the scattering and very scattering areas of market 
oysters the young growth is prolific, on the former being sufficient 
to yield to the tonger an average of about 26 bushels per day and on 
the latter about 16 bushels. On both of these areas there is an 
abundance of clean shells suitable for taking a set of spat, but the 
depleted areas have comparatively few’ shells and young oysters. 
The following observations were made on this rock: 
Details of Examination of Trout Shoal Rock. 
Station 
num- 
Date of ex- 
amination. 
Mean 
depth 
of wa- 
ter. 
Character of growth 
of market oysters. 
Oysters caught per 
square yard. 
Estimated quantity oys- 
ters per acre. 
ber. 
Spat. 
Culls. 
Counts. 
Seed. 
Market. 
Total. 
76 
Aug. 13,1909 
Feet. 
6.5 
Scattering 
7.7 
32.3 
4.0 
Bush. 
260 
Bush. 
48 
Bush. 
308 
105 
Aug. 14,1909 
4.0 
do 
1.0 
16.1 
2.4 
111 
29 
140 
482 
Sept. 8,1909 
4.5 
do 
4.7 
29.1 
4.9 
220 
59 
279 
488 
do 
6.5 
do! 
4.2 
21.6 
3.4 
168 
41 
209 
75 
Aug. 13,1909 
6.0 
Very scattering. . . 
4.3 
18.3 
2.0 
147 
24 
171 
106 
Aug. 14,1909 
5.0 
do 
.8 
25.6 
1.8 
171 
22 
193 
107 
do 
10.0 
do 
.4 
18.7 
3.3 
124 
40 
164 
108 
do 
9.5 
do 
.0 
4.8 
2.8 
31 
34 
65 
72 
Aug. 13,1909 
11.5 
Depleted 
.4 
2.1 
1.7 
16 
21 
37 
483 
Sept. 8,1909 
11.0 
do 
.7 
2.3 
.3 
19 
4 
23 
484 
do 
5. 5 
do 
1.6 
6.1 
.6 
50 
7 
57 
487 
do 
6.5 
do 
.0 
.0 
.0 
0 
0 
0 
