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Transactions. 



lowing table gives an approximate idea of the difference of 

 temperature referred to. The ocean record was made by the 

 engineer of the steam-trawler " Express " during two months of 

 this year : — 



Temperatures of Surface Waters of Bay and Ocean Six Miles 



off Otago Heads. 



(4.) The Dog-fish. — The idea that these fish are the natural 

 enemies of most of our edible fishes, excluding flat-fish, is gene- 

 rally accepted by the fishermen. Although, from the small num- 

 bers of these examined, and the short period of time during 

 which the observations were made, I would not like to affirm 

 absolutely that this is not so, I think it is worth recording that 

 from January to May, 1905, I examined the contents of the 

 stomachs of between fifty and sixty spinous dog-fish (Cephalo- 

 scyllium laticeps) and smooth-hound (Galeus antarcticus). Only 

 one of these contained fish, and that appeared to be a piece of 

 king-fish that had been cut with a knife. Their stomachs 

 generally contained large crabs (Cancer novce-zealandia?) and 

 other unrecognisable species, Grimothea gregaria, Munida sub- 

 rugosa, and worms. 



(5.) During such times as they are found in the bay Grimothea 

 gregaria have been found in the stomachs of almost all the fish 

 examined, including sea-trout, spotties, pig-fish, dog-fish, rock- 

 cod, red-cod, blue-cod, barracouta, and Maori chief. 



(6.) It is hoped that in future a closer observation of the 

 tides may be made. The effects of the moon's north and south 

 declination in apogee-perigee, of the effects of winds, high and 

 low local barometer, &c. — all these need recording. The station 

 is admirably situated for such study, which, carried on carefully 

 through a number of years, would no doubt be of considerable 

 scientific value. 



(7.) Ocean Currents. — So far it has not been possible to make 

 any observations of these currents. The Admiralty chart shows 



