211 



NOTES ON THE PLATES 



Place-names are shown in Plate I. 



Plates II-XII show the mean surface isotherms for each month in Antarctic waters and for a short distance north of the 

 Antarctic convergence. The pack-ice edge, shown by a hatched line, is in the mean position for each month, and is reproduced 

 from Mackintosh and Herdman (1940) without alteration except at one point in Plate III between 10° and 100° W (see text, 

 p. 199). The positions of thermograph records, and single observations included in the Discovery Committee's data, are shown 

 in yellow; pecked lines in yellow represent ship's routine temperature readings. 



