64 THE ACdhlMATISATION 



ninety strong fish were eventually turned 

 into the Jacobs, where, in May, 1875, many 

 of them, which had then attained a length 

 of seven inches, were seen by Mr. Howard, 

 who had reared them from the ova. 



The method of packing this delicate 

 freight for the colonies, it should be borne in 

 mind, is the only plan which has hitherto 

 yielded results, and its importance will, 

 therefore, be justly estimated by the natura- 

 list and pisciculturist. It may have occurred 

 to the reader to ask why the shipments were 

 always made so late in the season, when 

 most of the salmon had spawned, and the 

 difficulty of procuring gravid fish became 

 greater every day. Acchmatisation is 

 always surrounded by difficulties, and in 

 this case by one of peculiar character. The 

 ova must arrive during the colonial winter, 

 in order that the temperature in the streams 

 should be low enough to admit of their 

 being safely transferred to the water. Dur- 

 ing any time in March the water would still 

 be too warm, and in the first half of that 

 month its temperature would probably be 



