PROPOSED FISH HATCHERY.
TO THE EDITOR.
Sin, —Mr Hutchison, in Ins letter of 2.‘h-d inst., has brought forward one of the points in connection uith the acclimatisation of foreign fish on which cur information is acknowledged to be very defective. We know very little about the temperature of the seas surrounding this colony. It is to be regretted that the Marine Department has not in the past done something in the direction of accumulating such knowledge, for it would not have been a difficult matter to have furnished the Hinemoa with deep sea thermometers, and instructed her commander to make a continuous series of records in the course of his regular trips to the various lighthouses round the coast. The matter has been brought before the department before, but it is difficult to get such work carried out without express instructions from a Minister, as Government departments quite naturally desire to keep ’bur duties and their expenditure within as narrow limits as possible. It would be one cf the duties devolving on the curator of the proposed fish hatchery to keep as complete a record of sea temperature as lay in his power.
I am convinced, however, that, Mr Hutchison is in error as to the relative warmth of our seas as compared with those of Great Britain. The temperature of the Northeast Atlantic is much higher than one would expect from the latitude of the regions it touches, owing to the action of the Gulf Stream. On the other hand, the ocean off this part of New Zealand is relatively very cold, a southerly current flowing up this coast, and often bringing up great bodies of chilled water from the Antarctic Ocean. The absence of banks is a feature which we cannot well help in a group of oceanic islands, yet a glance at a chart of the colony shows that there is a very extensive area of ground within the eighty-fathom line, which is considered the limit of depth for beam trawling in the Old Country; while the area within the 200-falhom line, which is the limit for profitable deep sea fishing, is still greater. It is gratifying to know that public interest has been awakened in this matter.—l am, etc., Geo. M. Thomson. Dunedin, September 27.
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PROPOSED FISH HATCHERY., Evening Star, Issue 10430, 27 September 1897
PROPOSED FISH HATCHERY. Evening Star, Issue 10430, 27 September 1897
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