'218 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



EXPLANATION OF PLATES. 



Plate II. Surface Salinities, Fcbi-uary. 



Figures to the South of the white Hue refer to the 

 period Feb. 1-10, 1905, unless there is a note to the 

 contrary. 



Figures to the North of the white line, and West of 

 the line Calf of Man-Holy head, have been communi- 

 cated to us by Mr. E. W. L. Holt, and refer to the 

 period Feb. 1-19, 1909. (A few figures referring to 

 1905 are also specially indicated.) 

 Figures to the East of the line Calf of Man-Holyhead 

 are our own, and refer to the period Jan. 25-29, 1909. 

 The salinity, 3443 at 52° 46' N. ; 5° 38' W. is that at 

 31 metres. 



Plate III. Surface Salinities, May. 



Figures to the South of the white line refer to the 

 period May 1-16, 1905, unless there is a note to the 

 contrary. 



Figures to the North of the white line and West of 

 the line Calf of Man-Holyhead are Mr. Holt's, and 

 refer to the period May 3-10, 1909. (A few figures 

 referring to 1905 are also specially indicated.) 

 Figures to the East of the line Calf of Man-Holyhead 

 arc our own, and refer to the period May 17-19, 1909. 



Plate IV. Surface Salinities, August. 



Figures to the South of the white line refer to the 



period Aug. 1-16, 1905, unless there is a note to the 



contrary. 



Figures to the North of the white line, and West of 



the line Calf of Man-Holyhead, are Mr. Holt's, and 



refer to the period Aug. 2-10, 1909. (A few figures 



referring to 190") are also specially indicated.) 



