of the Fishery Board for Scotland. 



487 



TABLE XIII. — Specific Geavity and Calculated Salinity at 

 North Carr Rock Light- Vessel. 



Monthly Means. 







Observations, 9 a.m. 



Month. 





Surface. 



12 Fathoms. 



Bottom (24 f.). 







Sp. Gr. 



Sal. 



Sp. Gr. 



Sal. 



Sp. Gr. 



Sal. 



1891. 















♦April 



24-6 



310 







24-9 



3-16 



May 



251 



3-20 







25-2 



3 21 



June 



25-0 



3-18 







25-4 



3 24 



July 



25 4 



3-24 



25*5 



3 : 26 



25-6 



3 27 



August 



25-0 



3-18 



25 4 



3-24 



25-4 



3-24 



September 



25-3 



3-23 



25-4 



3-24 



25-6 



3-27 



October 



25 1 



3-20 



25-6 



3 27 



25-4 



3-24 



November 



24-7 



312 







24-7 



312 



December 



24-8 



3 14 







25-0 



3-18 





Observations, 3 p.m. 



1891. 















*April 



24-6 



3 10 







25-0 



3-18 



May 



25-3 



3 23 







25 4 



3-24 



June 



25-0 



3-18 







25-5 



3-26 



July 



25-5 



3-26 



25-6 



3-27 



25-7 



3-29 



August 



25 4 



3-24 



25-5 



3-26 



25-6 



3-27 



September 



25-5 



3-26 



25-7 



3 29 



25 7 



329 



October 



25-3 



3 23 



25-6 



3-27 



25 5 



326 



November 



25-2 



3-21 







25-0 



318 



December 



24-8 



3 14 







24-9 



3-16 



21-30 only. 



TABLE XIV. — Specific Gravity and Calculated Salinity 

 at the Bell Rock Lighthouse. 





9 A.M. 





3 P.M. 



Ten-day Period. 



Surface. 





Surface. 





Sp. Gr. 



Sal. 





Sp. Gr. 



Sal. 



1891. 













April 1-10 













„ 11-20 













„ 21-30 

 May 1-10 

























„ 11-20 















„ 21-31 



26-0 



334 





26'-0 





3-34 



June 1-10 



26-2 



3-38 





26-2 





3-38 



,, 11-20 



26-1 



3-36 





26-1 





3-36 



„ 21-30 

 July 1-10 



26-2 



3-38 





26-2 





3-38 



26-2 



3-38 





26-2 





3-38 



„ 11-20 



26-2 



3-38 





26-2 





3-38 



„ 21-31 

 Aug. 1-10 



26-3 



3-40 





26-2 





3-38 



26-4 



3-42 





26-2 





3-38 



„ 11-20 



26-3 



3-40 





26-4 





3-42 



„ 21-31 

 Sept. 1-10 



26-3 



3-40 





26-2 





3-38 



261 



3-36 





26-1 





3-36 



„ H-20 



262 



3-38 





261 





3-3- r > 



„ 21-30 

 Oct. 1-10 



26-2 







26-3 





3-40 



26-2 



3-38 





26-2 





3 38 



„ 11-20 



26 2 



3-38 





26-1 





3-36 



„ 21-31 



25-6 



3-27 





25 7 





3-29 



Nov. 1-10 



25-9 



3 32 





25-9 





3-32 



,, 11-20 



25-9 



3-32 





25 8 





3*30 



„ 21-30 



25-5 



3 26 





25 6 





3 27 



Dec. 1-10 



25-8 



3-30 





25-6 





3-27 



i, H-20 



25-6 



3 27 











i. 21-31 



24 8 



3 14 











