Phil. Trans,^ A, vol. 196, Plate 2 
H.N.Dichson, 
DISTRIBUTION OF SALINITY IN THE SURFACE WATERS OF THE NORTH ATLANTIC DURING THE YEAR 1896. 
MARCH 
FEBRUARY 
APRIL 
AUGUST 
JULY 
DECEMBER 
NOVEMBER 
OCTOBER 
SEPTEMBER 
SCALE OF SALINITY COLOURING 
