1877.] On the Tides of the Arctic Seas. 63 



Hence, finally, 



X= + 2-21- 13-28= -11-07, 

 Y= +17-21- 0-33= + 16-88; 

 or X= —11-07 = 156-2 miles (towards Eangoon). 



T= +16-88 = 238-2 miles (towards Greenwich). 



The total effect of a continent equal to the North Pacific would be 



VX" 2 + Y 2 = 250-6 miles, 



tan (<£)? =0=0° 47' E. of 180°. 

 The total effect of a continent equal to the South Pacific Ocean would 



be 



VX 2 +Y 2 =201-8 miles, 



tan (0) = 23° 17' E. of Greenwich. 



March 15, 1877. 

 Dr. J. D ALTON HOOKER, C.B., President, in the Chair. 



The Presents received were laid on the table, and thanks ordered for 

 them. 



The following Papers were read :— 



I. "On the Tides of the Arctic Seas.— Part VII. Tides of 

 Port Kennedy, in Bellot Strait/'' (Final Discussion.) By 

 the Rev. Samuel Haughton, M.D. Dublin, D.C.L. Oxon., 

 F.R.S., Fellow of Trinity College, Dublin. Received February 

 17, 1877. 



(Abstract.) 



The tidal observations at Port Kennedy were made hourly for 23 days ; 

 and in my former discussion of these tides (Part VI.) I used only the ob- 

 servations made in the neighbourhood of H. W. and L. "W., obtaining 

 the following results for the Tidal Coefficients : — 



Diurnal Tide. Semidiurnal Tide, 



S= 23-4 inches. S= 7-0 inches. 



i=5 h 12 m . i= 



M=20-9 inches, M=17*0 inches. 



i m =0 h 34 m . i»=-0 h 12 m . 



