of the Fishery Board for Scotland. 



439 



TABLE XVII. — Monthly Mean Specific Gravity and Salinity 

 at Abertay Light Vessel. 









Observations, 



) A.M. 













Month. 



Surface. 



3 or 4 Fathoms.* 



Bottom. 

















Sp. Gr. 



Sal. 



Sp. Gr. 



Sal. 



Sp. Gr. 



Sal. 



1891. 















April 



22-6 



2-75 



23-6 



2-94 



24-0 



3 00 



May 



23-8 



2-97 



24-1 



3 02 



24-5 



3-08 



June 



25-0 



3-18 



25-1 



3-20 



25-3 



323 



July- 



25 1 



3-20 



25-2 



3-21 



2/5 -4 



3-24 



August 



247 



3 12 



24 9 



3-16 



25 - 2 



3*21 



September 



23 1 



2-82 



23 8 



2-97 



24-3 



3-05 



October 



21-5 



2-54 



22 5 



2-74 



23-3 



2-87 



November 



21-9 



2-62 



236 



2-94 



23-8 



2-97 



December 



21-5 



2 54 



23-5 



2-92 



23-3 



2-87 







Observations, 3 



P.M. 







1891. 

 April 



23-8 



2 97 



24-6 



3 10 



24 9 



3-16 i 



May 



23-9 



2-99 



24-5 



3-08 



24-9 



3-16 | 



June 



24-8 



3 14 



25-0 



318 



25-2 



3-21 1 



July 



25 2 



3-21 



25-2 



3-21 



25-5 



3-26 



August 



25-0 



3-18 



25-3 



323 



25-5 



3-26 



September 



24-9 



3-16 



25-2 



3-21 



255 



3-26 ! 



October 



23-5 



2-92 



24-7 



3 12 



25 1 



3-20 



November 



24-1 



3-02 



23 5 



2-92 



24-9 



3 16 



December 



23 4 



2-89 



23-8 



2-97 



24-7 



3 12 



* Readings at 4 fathoms until 19th May, thereafter at 3 fathoms. 



II. AT THE 'GARLAND'S' TRAWLING STATIONS, FIRTH OF 



FORTH, 1891. 



Station I 







West End of Station. 







East End of Station. 





Date. 



























Hour. 



Bar. 



Air. 



Surf. 



Bot. 



Trans. 



Bar. 



Air. 



Surf. 



Bot. 



Trans. 



Hour. 



1891. 



























Jan. 15 



15 40 



30-25 



5-0 



51 



5-2 



2 



30-33 



3-9 



5-5 



5-4 



2? 



13-30 



Feb. 23 



10-55 



30-28 



6-7 



5-2 



5-3 





30-28 



7-8 



5-2 



5-4 



4" 



13-0 



Mar. 13 



10-35 



29-90 



3-9 



4-5 



5-2 



2 



29-89 



6-7 



5-3 



4-7 



3 



13-25 



Apr. 15 



10-43 



30-03 



8-3 



5 1 



5-0 



2 



30-04 



9-5 



5-5 



4-8 



2| 



12-43 



May 23 



13 10 



29-64 



13-2 



8-9 



8-1 



4 



29-64 



11 1 



8-9 



7-2 



11 10 



June 22 



16-30 



30-31 



14-5 



13-3 



9-5 



n 



30-31 



11-6 



12-8 



8-6 





13-50 



July 15 



9-45 



30-19 



15-6 



13 1 



10-0 



2| 



30-17 



15-6 



14 4 



10 0 





I1*1o 



Aug. 14 



10 22 



29-80 



13-3 



13 0 



12-0 



3 



29-80 



16-1 



13-3 



12-2 



7 



IJ45 



Sept. 19 



8-30 



29-84 



14-5 



12-7 



12-6 



H 



29-87 



14-5 



12-6 



12-3 



H 



10-35; 



Oct. 24 



10-26 



29-67 



10-6 



10-0 



10-8 



2 



29-72 



12-8 



10T, 



10-8 



n 



12-2(1 



Nov. 25 



10-23 



29-55 



5-3 



7-6 



8-9 



2 



29-55 



5-6 



8-3 



8-9 



4 



12-28 



Dec. 17 



15 15 



30-32 



4-5 



6-8 



7-0 



2 



30-33 



3-3 



7-4 



7-5 



3 



13-5 











Station II. 













Jan. 15 



13 0 



30-33 



3-9 



5-2 



5-4 



2i 



30-42 



4-5 



5-5 



5-5 



2d 

 3 



11 0 



Feb. 24 



13-15 



30-28 



11-1 



5-3 



5-7 



3 



30-30 



7-8 



5-6 



5-2 



12 15 



Mar. 13 



15-35 



29-89 



13-3 



5 0 



4-8 



n 



29-89 



10-6 



5-2 



4\s 



| 



14-10 



Apr. 15 



15-23 



30-01 



8-3 



5-3 



' 4-8 



3 



30-02 



s-i 



5-6 



4-9 



13-27 



May 25 



14 15 



29-82 



10-6 



8-3 



10-4 



4 



29-82 



9-2 



8-4 



8-3 



3 



12-30 



June 22 



13-5 



30-31 



15-0 



12-8 



9-3 



4 



30-32 



13-6 



13 0 



9-5 



M 



U-30 



July 15 



12-20 



30-17 



15-6 



14-0 



10-0 





30-12 



15-6 



14-7 



11-1 



H 



14-15 



Aug. 14 



12-40 



29 80 



16-7 



13 1 



12-2 



7 



29-80 



15-6 



13 0 



12-0 



6i 



14-25 



Sept. 19 



13-0 



29-85 



15-0 



128 



12 5 



4 



29-85 



14-5 



12-7 



12-3 



4" 



110 



Oct. 23 



15-10 



29-35 



12-2 



10-6 



10-7 





29-33 



11-7 



10-7 



12-1 



3* 

 3 



13-45 



Nov. 21 



12-40 



29-83 



8-1 ; 



8-8 



8-7 



H 



29-83 



8-1 



8-3 



9 1 



11 15 



Dec. 17 



12-30 



30-33 



3-9 



5-8 



7-0 



12 



30-33 



4-5 



6-1 



7-4 





10-45 



