of the Fishery Board for Scotland. 
385 
TABLE XI. — Mean Monthly Specific Gravity and Calculated 
Salinity at Bell Rock Lighthouse. 
Montli. 
10 A.M. 
4 P.M. 
Feiuod. 
10 A.M. 
4 P.M. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
Sp. Gr, 
Sal. 
1889. 
1890. 
October 
July 
25-9 
3-33 
26 1 
3-35 
November 
26'l 
3*37 
2(5i 
3-35 
August 
26-3 
3-40 
26 1 
3-37 
December 
26 0 
3-34 
25-8 
3-31 
September 
26-2 
3-39 
26-2 
3-39 
1890. 
October 
26-2 
3-37 
26-0 
3-34 
January 
25-9 
3-32 
November 
26 0 
3-34 
26-0 
3-34 
February 
25-8 
3-30 
December 
26 0 
3-33 
26-0 
3-34 
March 
25-8 
3-30 
25-8 
3*29 
1891. 
April 
January 
25-9 
3-31 
25-8 
3-29 
May 
25"8 
3-30 
25'8 
3-31 
February 
25-6 
3-28 
25-7 
3-30 
Juno 
26 0 
3-35 
26-0 
3-34 
March 
26 0 
3-35 
26-0 
3-34 
TABLE XII. — Specific Gravity and Calculated Salinity at 
OxcAR Lighthouse. 
Ten-Day 
Period. 
9 A.M. 
3 P.M. 
Period. 
9 A.M. 
3 p. M. 
Surface. 
Surface. 
Surface. 
Surface. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
1889. 
1890. 
Dec. 17-20 
2.') -4 
3-25 
25-5 
3-26 
July 1-10 
24-9 
3-16 
25 0 
3-18 
„ 21-31 
24-4 
3 06 
24-7 
3-12 
„ 11-20 
24-9 
316 
25-0 
3-18 
1890. 
„ 21-31 
25-5 
3-26 
25 -4 
3-25 
Jan. 1-10 
24-4 
3 06 
24-9 
316 
Aug. 1-10 
25-5 
3-26 
25-5 
3-26 
,, 11-20 
24-3 
3 04 
24 1 
3-01 
M 11-20 
25 0 
3-18 
25-3 
3-24 
„ 21-31 
23-8 
2-98 
23-1 
2-84 
„ 21-31 
25-2 
3-22 
25-2 
3-22 
Feb. 1-10 
24-8 
3 14 
25-2 
3-22 
Sept. 1-10 
24-9 
3-16 
25 1 
3-20 
„ 11-20 
25-0 
3-18 
24-9 
316 
Oct. 7-10 
24-2 
3-02 
24-4 
3-06 
„ 21-28 
24-6 
3 10 
24-4 
3-06 
„ 11-20 
25-0 
3-18 
25-2 
3-22 
Mar. 1-10 
24-9 
3 16 
25-2 
3-22 
„ 21-31 
25-0 
318 
25 1 
3-20 
„ 11-20 
24-7 
312 
24-7 
3 12 
Nov. 1-10 
22-2 
2-68 
22-8 
2-77 
„ 21-31 
24-4 
3-06 
24-6 
3-10 
11-20 
22-6 
2-75 
22-8 
2-77 
Apr. 1-10 
25 1 
3-20 
25-2 
3-22 
„ 21-25 
23-7 
2-96 
24-2 
3 02 
„ 11-20 
25-0 
318 
25-3 
3-24 
Dec. 
„ 21-30 
25 0 
3-18 
24-9 
316 
1891. 
May 1-10 
25-0 
3-18 
25-2 
3-22 
Jan. 5-10 
24-0 
3 00 
24 1 
3-01 
„ 11-20 
25-2 
3-22 
25-0 
3-18 
„ 11-20 
24-6 
310 
24-6 
310 
„ 21-31 
24-9 
3 16 
24-8 
3 14 
„ 21-31 
24-0 
3-00 
24-5 
3-08 
June I-IO 
25-3 
3-24 
25-2 
3-22 
Feb. 1-10 
24-2 
3-02 
24 1 
3 01 
„ 11-20 
24-7 
312 
24-8 
314 
Mar. 6-10 
25I.-0 
3 18 
25-0 
3-18 
„ 21-30 
25-2 
3-22 
25-0 
3 18 
„ 11-20 
24-4 
3-06 
24-7 
312 
„ 21-31 
24-2 
3 02 
24-5 
3-08 
TABLE XIII. — Monthly Mean Specific Gravity and Salinity — 
OxcAR Lighthouse. 
Month 
9 A.M. 
3 P.M. 
Period. 
9 a.m. 
3 P.M. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
Sp. Gr. 
Sal. 
1889. 
1890. 
December 
24-9 
3 15 
25-1 
3-19 
August 
25-2 
3-22 
25-3 
3-24 
1890. 
September 
January 
24-2 
3 03 
24-0 
3-00 
October 
24*7 
24**9 
3'l6 
February 
24-8 
3-14 
24-8 
315 
November 
22-8 
2-79 
23-3 
2-85 
March 
24-7 
3 11 
24-8 
315 
December 
April 
25-0 
3-19 
25-1 
3-21 
1891. 
May 
25-0 
319 
25 -e 
3-18 
January 
24-2 
3 03 
24-4 
306 
June 
251 
319 
25-0 
3 18 
February 
July 
251 
319 
25 1 
3-20 
March 
24'5 
3*09 
24*'7 
2 h 
