ON THE TEANSPOET OF OTA. 75 



trance produced by extreme cold on the human 

 system, and that during this period the egg is much 

 less sensitive to shocks. It wo\ild he well to try 

 the effect of similar measures upon the eggs of birds, 

 as the acclimatisation of scarce and tender species 

 might be greatly simplified if it should be found 

 to answer. 



Mr. Youl's plan answered perfectly, and 30,000 of 

 the eggs arrived at Tasmania in perfect condition, 

 and were safely deposited in the river Pleuty, in 

 beds prepared for them. Unfortunately, soon after 

 their deposition the temperature of the water rose to 

 54°, and the consequence of this high temperature 

 was, that vast quantities of the ova died, and they 

 only succeeded in hatching out about 3,000 of the 

 30,000 ova. That the experiment should have so 

 greatly failed after the most onerous part of it had 

 been so nobly got over, is much to be regretted. 



There need, however, now be no longer any diffi- 

 culty in transplanting various breeds of fish from 

 place to place, and from clime to clime, wherever ice 

 can be obtained ; and, no doubt, ere many years are 

 over, we shall have introduced into this country every 

 fish that exists in others which is worth the transit. 

 Before quitting this subject, I must note, that it 

 appears to be quite possible to incubate ova alto- 



