43S 



Pari III. — Eleventh Annual Report 



TABLE XV. — Mean Monthly Specific Gravity and Calcu- 

 lated Salinity at the Bell Rock Lighthouse. 





Month. 



9 A.M. 



3 P.M. 





Sp. Gr. 



Sal. 



Sp. Gr. 



Sal. 





1891. 

 April 











3 : 34 







May 



June 



July 



August 



September 



October 



November 



26-0 

 26-2 

 26-2 

 26-3 



M CO CO 0 

 CO CO c 

 O GO 00 >t 



26-0- 



26-2 



26-2 





3-38 

 3-38 

 3-40 







26-3 

 26-0 

 25 8 



3-40 

 3-34 

 3-30 





26-3 

 26-0 

 25-8 





3-40 

 3-34 

 330 







December 



25-6 



3 27 





25-6 



3-27 





TABLE XVI. — Specific Gravity and Calculated Salinity at 

 Abertay Light Vessel. 





Observations, 9 a.m. 

















Ten-day Period. 



Surface. 



3 or 4 Fathoms.* 





Bottom. 





















Sp. Gr. 



Sal. 



Sp. Gr. 





Sal. 



c 



p. Gr. 



Sal. 



1891. 



















April 1-10 



22 '4 



2-72 



23 1 





2-82 





23-3 



2-86 



,, 11-20 



23*2 



2*84 



24-7 



312 





25-0 



3-18 



„ 21-30 



22-3 



2-70 



23 1 



2-82 





23-8 



2-97 



May 1-10 



22*7 



2-76 



23-2 



2-84 





23-7 



2-96 



H-20 



24*5 



3'08 



24-8 



3 14 





24-9 



3-16 



„ 21-31 



24-1 



3*02 



24-3 



3-05 



24-8 



3-14 



June 1-10 



24'7 



3 12 



24-8 



3-14 



25 1 



3-20 



„ 11-20 



25-3 



3-23 



25-6 



3-27 



25-7 



3-29 



„ 21-30 



25-0 



3-18 



25-0 



318 



25 2 



3-21 



July 1-10 



24-8 



3 14 



24-9 



3-16 



25 2 



3 21 



„ 11-20 



25-4 



3-24 



25-5 



3-26 



25-7 



3-29 



„ 21-31 



251 



3-20 



251 



3-20 



25 3 



3 23 



Aug. 1-10 



24-8 



3-14 



25-0 



318 



25 3 



3-23 



„ 11-20 



24-8 



3-14 



25-0 



3-18 



25-2 



3-21 



„ 21-31 



24-6 



3-10 



24-8 



3-14 



25-0 



3-18 



Sept, 1-10 



21-8 



2'60 



22-6 



2-75 



23 1 



3-20 





,, 11-20 



23-0 



2-80 



23-5 



2-92 



24-4 



3-07 





„ 21-30 



24-5 



3-08 



25-2 





3-21 



25-5 



3-26 





Oct. 1-10 



22-0 



2-64 



22-6 





2-75 



23-1 



2-82 





„ 11-20 



19-6 



2-22 



21*2 





2-52 



22-3 



2-70 





„ 21-31 



22-8 



2-78 



23-7 





2-96 



24-5 



3-08 





Nov. 1-10 



22-4 



2-72 



23-5 





2-92 



23-9 



2-99 







202 



231 



23-7 





2-96 



22-4 



2-72 





„ 11-20 

 „ 21-30 



23-1 



2-82 



23-7 





2-96 



25-2 



3-21 





Dec. 1-10 



22-0 



2-64 



25-2 





3 21 



23-2 



2-84 





n_9fl 



20-1 



2-29 



21-5 





2-54 



22-2 



2-68 





>> — — 

 „ 21-31 





22-4 



272 



23-8 





2-97 



24 -6 



310 













Observations 



, 3 P.M. 





1891. 



















April 1-10 





24-4 



3-07 



24-6 



3 10 



24-9 



316 





„ 11-20 





24 1 



2-66 



24 1 



3-02 



24-6 



3-10 





21-30 





24-8 



314 



25 2 





3 21 



25-3 



3 23 



May 1-10 





23-2 



2-84 



24 1 





3-02 



24*7 



3-29 



„ 11-20 





23-8 



2-97 



24-4 





3-07 



24 7 



3 29 





„ 21-31 





24-7 



3-12 



25-0 





3 IS 



25-3 



3-23 





June 1-10 





24-8 



314 



24 9 





3-1C 



25'1 



3 20 





„ H-20 





24-3 



3-05 



24-8 





314 



25 1 



3-20 





„ 21-30 





25 2 



3 21 



25-3 





3-23 



25-4 



3-24 





July 1-10 





25-4 



3-24 



25-4 





3-24 



25-6 



3-27 





„ 11-20 





24-9 



3 16 



25-0 





3 18 



25-4 



3-24 





„ 21-31 





25-3 



3-23 



25-3 





3 23 



25-4 



3-24 





Aug. 1-10 





25-8 



3-30 



25-9 





3-26 



25-9 



3 32 





11-20 





24-8 



3-14 



25-2 





3-21 



25-4 



3-24 





„ 21-31 



24-4 



3-07 



24-7 





3 12 



25-3 



3*23 





Sept. 1-10 



25-4 



3 24 



25 5 





3-26 



25 7 



3-29 





„ 11-20 



24-7 



3-12 



25-1 





3-20 



25-3 



3-23 





„ 21-30 



24-5 



3-08 



25-1 





3-20 



25-4 



3-24 





Oct. 1-10 



24-8 



314 



25 1 





3-20 



25-5 



3-26 





„ 11-20 



23-4 



2-89 



24-7 





3 12 



25-0 



3-18 





21-31 



22 4 



2-72 



24-3 





3 05 



24-9 



3 16 



Nov. 1-10 





24 6 



3-10 



24*9 





3*16 



24-9 



3 16 



,, 11-20 





24-6 



3-10 



212 





2-52 



25-0 



3-18 



„ 21-30 





23 1 



2-82 



24-4 





3-07 



24-7 



312 



Dec. 1-10 



23 1 



2-82 



22 7 





2-76 



24 G 



3 10 



„ H-20 



23-8 



2-97 



24-2 



3-03 



24-5 



3 08 



„ 21-31 



23-2 



2-84 



24-5 



3-08 



24-9 



3-16 



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



