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I may direct attention in the first place to the surface 

 temperatures (Plate I.) It will be readily observed that there is a 

 striking rise of temperature as we proceed from the shore. In 

 the case of the line of Stations I to V, the former in Table Bay, and 

 the latter 57 miles West, there is, a difference of 4"9 degrees. At 

 Station YII. a temperature of 69 "9 was met with, a high tempera- 

 ture never observed in three year's observations at Simon's Bay 

 or Robben Island. Further south this great body of warm water 

 seems to approach nearer the shore, until at Cape Point within a 

 few miles of the shore, a temperature of 60° -7 is found. An 

 exception to this rise, as we proceed from the shore, is found in 

 Stations III, X and XIII, which are respectively colder than the 

 Stations next them on the landward side. As these observations 

 were necessarily taken at different times we cannot, however, lay 

 much stress on this, which may only be an accidental occurrence, 

 especially as at Station XXII, where observations were repeated 

 about 27 hours afterwards, a difference of 2°*4 was found. 



The most marked difference in temperature in two neighbouring 

 Stations occurred between Stations VIII and IX, respectively 69*^-1 

 and 61°, a difference of 8'^*1, there being, however, an interval of 6 

 days between these observations. It will be noted that when the 

 higher temperature was observed there was a pretty strong breeze 

 from the South, while at the time of observation of tiie lower 

 temperature there was a slight wind from the North. Ou 

 referring to the daily observations taken at 8 am. at Simon's 

 Bay I find that there was a pretty strong South-East wind from 

 the I6th to the 19th, and on the 20th and 21st of the same month 

 a North- West and North wind respectively, and doubtless the 

 difference of temperature is to be connected with this. 



The temperature, observed at Station XXII, however, cannot 

 be satisfactorily accounted for in this way, as the wind was from 

 the North on both occasions, being indeed stronger when the 

 higher temperature was observed. 



The surface temperatures shown in Plate II are to be taken in 

 connection with the preceding, and consist of, first, a series taken 

 at intervals of about 5 miles on the 3id March, 1898, showing the 

 rise in temperature at a distance from the shore similar to that 

 already observed, the difference between the 1st Station, about 7 

 miles off, and the last, about 40, being 9 degrees; second, several 

 surface temperatures taken on a voyage to St. Helena Bay, 

 ll-18th February, 1898, in which the temperatures 59"" and 58"" 

 in St. Helena Bay may indicate an approach of the warm water 

 to the shore in this region. 



The three Plates III, lY and V show in a graphic form the 

 limits of the water of higher temperature ia a vertical direction, 

 and it will be apparent that they afford evidence of the presence 

 of an underlying colder mass of water quite foreign to the over- 



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