PRODUCTION AND COLLECTION OF SEED OYSTERS 
225 
Table 12 . — Temperature and salinity of the water at the surface of Onset Bay near Shell Point , July- 
Seplember, 1927 
[Observations were made between 10 a. m. and 5.30 p. m.] 
Day of the month 
1 
3 
4. 
5 
6 . 
7. 
8 . 
9. 
10 . 
11 . 
12 
13. 
14. 
15. 
16. 
July 
August 
September 
July 
August 
Tern- 
Salin- 
Tom- 
Salin- 
Tem- 
Salin- 
Day of the month 
Tem- 
Salin- 
Tem- 
Salin- 
pera- 
ity. 
pera- 
ity. 
pera- 
ity, 
pera- 
ity. 
pera- 
ity. 
ture, 
per 
ture, 
per 
ture, 
per 
ture, 
per 
ture, 
per 
° C. 
mille 
0 C. 
mille 
° C. 
mille 
° C. 
mille 
° C. 
mille 
20. 5 
28. 28 
23. 3 
27. 11 
20.0 
17 
22.8 
28. 40 
21.7 
26. 58 
20.8 
27. 75 
23.3 
27. 05 
21. 1 
20.31 
18.. 
22.8 
29.27 
20.5 
26. 42 
21.7 
23. 55 
23. 3 
23. 38 
21. 7 
27. 00 
19 
21. 1 
27. 83 
18.9 
26. 44 
21. 1 
28. 03 
24.4 
28. 00 
22.2 
20 
21. 1 
28. 55 
18.3 
29. 65 
21.1 
28. 35 
24.4 
26. 53 
22. 2 
21.. 
21.7 
27. 83 
18.3 
26.49 
21.7 
27. 63 
24. 2 
26. 62 
22.8 
26. 26 
22. 
21. 4 
28. 03 
19.4 
26. 11 
20.5 
29. 87 
25.0 
26. 02 
22.5 
25. 30 
23.. 
21.4 
28. 82 
21. 1 
26. 50 
21. 1 
28. 55 
23.9 
26. 02 
22. 2 
24.44 
24 
22. 2 
26. 35 
21. 7 
27. 16 
21. 1 
27. 43 
23. 9 
26. 56 
22. 2 
25 
22. 5 
28. 13 
20. 5 
25. 01 
21. 1 
26. 91 
23. 3 
26. 06 
26 
24. 7 
28. 28 
21. 1 
27. 27 
22. 2 
27. 39 
23. 9 
26. 82 
27 
23. 3 
27. 86 
20.8 
26. 18 
21. 7 
27. 01 
24. 4 
26. 62 
28 
23. 3 
27. 88 
20. 5 
22. 2 
27. 86 
24. 2 
25. 30 
29 
26. 5 
27. 57 
20. 5 
23.9 
28. 17 
26. 82 
30. 
26. 2 
27. 25 
19. 4 
24. 99 
28. 62 
22. 2 
26. 67 
31__ 
23.3 
27. 94 
20.3 
26. 38 
23.3 
29.22 
22.3 
25. 90 
September 
Tem- 
pera- 
ture, 
° C. 
Salin- 
ity, 
per 
mille 
Table 13 . — Temperature and salinity of the water at the surface of Onset Bay, near Shell Point, July- 
August, 1928 
Date 
Time 
Tem- 
pera- 
ture, 
° C. 
Salin- 
ity, 
per 
mille 
Date 
Time 
Tem- 
pera- 
ture- 
° C. 
Salin- 
ity, 
per 
mille 
Date 
Time 
Tem- 
pera- 
ture, 
° C. 
Salin- 
ity, 
per 
mille 
July 2 
1.45 p. m 
24.4 
27. 36 
July 17 
10.11 a. m 
24.1 
28. 03 
July 30 
3.10 p. m 
23.9 
28.01 
3 
11 a. m 
25.0 
27. 64 
IS 
1.45 p. m 
26. 1 
27. 84 
31 
11.07 a. m 
23.7 
27. 99 
5 
12.05 p. m 
24.0 
28.24 
19 
10.40 a. m 
25.1 
28. 16 
Aug. 2 
9.55 a. m 
22.9 
28. 31 
6 
1.51 p. m 
21.3 
27.77 
20 
12.03 p. m 
24.6 
28.16 
3 
10.05 a. m 
24.1 
28.45 
7 
20.4 
28. 30 
21 
21.8 
28.16 
6 
23 1 
28 77 
9 
10.46 a. m 
22.7 
28. 51 
23 
9.50 a. m 
21.7 
27.70 
9 
2.43 p. m 
23.9 
28.73 
10 
22.8 
27. 97 
24 
8.20 a. m_. 
22.0 
27. 21 
10 
9.55 a. m 
24. 3 
28. 73 
12 
5 p.m... 
23. 1 
29. 17 
25 
9.16 a. m 
26.1 
27. 17 
13 
11.35 a. m 
24.5 
29. 11 
13 
°.45 a. m 
22.3 
27.84 
26 
7.19 a. m 
21.9 
27. 72 
20 
8.45 a. m 
2-4.4 
29. 85 
16 
10.15 a. m 
23.4 
26. 83 
27 
8.15 a. m 
22.9 
27. 72 
31 
3.07 p. m 
25.7 
29. 66 
A study of the horizontal distribution of the temperature of the water was made 
in 1928 with the view of determining whether there were any significant differences 
in the temperature at different sections of the bay. Observations were carried out 
on calm and warm days of June 17 and 26, August 20, and September 4. Twenty- 
nine stations were distributed uniformly over the whole area from the head of the 
bay to its mouth, and surface temperature readings were taken within less than 90 
minutes. On June 17 observations were made at half flood; on June 26 records 
were taken both at low and high water; on August 20 at high water; and on Sep- 
tember 4 at low water. The results of these observations, presented in Table 14, 
show no significant differences in the temperatures of the water in various sections 
of the bay. It can be noticed that on June 26 the temperature of the water in the 
lower section of the bay (stations 25-29) was less than 1° cooler than it its upper 
part. On August 20 the lowest temperature (23.7° C.) was observed in the middle 
of the bay (station 13) and the highest (25.6° C.) close to the sand flats (station 
22); the temperature in the upper part of the bay (station 1) was 25° C. On 
September 4, observations made at low tide early in the morning (between 4.40 a. 
m. and 5.54 a. m.) show that the temperature of the water in the upper part of the 
bay (station 2) was 1.2° C. less than in the middle part. 
