THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 



303 



longitude 41° 55' W. It is of interest to note the rapid fall in surface sea tempera- 

 tures which takes place between 54° 30' and 58° S. latitude between the meridians of 

 57° 30' and 45° W., and between 48° and 52° 30' S. latitude on the lOth meridian west 

 of Greenwich shown during the voyage of the " Scotia." In this connection I have 

 included a number of extra observations made by Dr Bruce during his voyage to the 

 Antarctic in 1892, as well as observations taken on the "Belgica" and " Valdivia," 

 and some observations made by myself on the Argentine gunboat " Uruguay " in 1905. 

 It will be seen that there is a rapid fall in the surface sea temperatures which takes 

 place in lower latitudes the further we proceed east up to at least 10° of east longitude. 

 Still further to the east, as shown by the " Challenger" observations, the polar water i& 

 met with more to the south. 



Surface Sea Temperature. 



" Belgica." 



Bruce Antarctic Expedition. 



1898, 

 Jan. 16 

 18 

 19 

 20 

 21 

 22 

 23 

 24 



Long. W. 



64 30 

 63 12 

 63 04 

 61 58 

 61 53 

 61 48 

 61 47 

 61 24 



Surface 

 Sea Temp. 



46-0 

 37-6 

 37-8 

 34-7 

 34-9 

 34-1 

 33-3 

 35-2 



Dec. 



1892 



11 



12 



13 



14 



15 



16 



17 



18 



Long. W. 



57 35 

 55 17 

 53 47 

 53 57 



50 38 



51 01 

 50 03 



52 18 



Sea Temp. 



40-7 

 41-1 

 41-8 

 38-5 

 36-1 

 34-2 

 31-8 

 31-4 



1905. 



Jan. 10 . 



11 . 



12 . 



13 . 



14 . 



15 . 



"Uruguay." 



Lat. S. 



64 57 

 63 22 

 61 36 

 59 24 

 56 54 

 54 53 



Long. W. Sea Temp. 



63 22 

 60 55 

 63 04 



64 

 65 



15 

 43 



67 19 



32-2 

 34-0 

 35-6 

 36-9 

 44-1 

 48-8 



1898 

 Nov. 18 

 19 

 20 

 21 

 22 

 23 

 24 



"Valdivia." 



Long. E. 



14 2 



13 3 



11 10 



10 03 



8 37 



7 19 



6 02 



Sea Temp. 



47-3 

 450 

 42-8 

 39-6 

 37-8 

 34-7 

 30-6 



VOL. II. 



41 



