280 DOMESTICATED TROUT. 



at night, tie cords across the paths, or, if the ground is 

 suitable, strew a layer of fine sand around the ponds. 

 The breaking of the cords or footprints on the sand will 

 reveal the presence of the nocturnal visitors. 



Freezing Fish.* 



From the Scientific American, January, 1854- 



I have witnessed repeatedly, the two winters I have been 

 here, the resuscitation of frozen trout, pickerel, and perch, 

 on thawing them out in fresh running water, even alter 

 they had been carried for miles. 



It is only under certain circumstances, however, that 

 they will revive. If caught on a day when it is cloudy and 

 freezing hard, and if not hurt with the hook, and they 

 freeze immediately on being thrown on the ice, they will 

 revive on being thawed out. But if allowed to toss about 

 in the sun, on a clear day, and probably not freeze for an 

 hour or two after they are caught, then they will never 

 revive. 



It is so common a thing that I have only to go back to 

 the last day I was fishing, for an example of it. I went 

 down to Lake Sandford with one of our men, on the 29th 

 ultimo, and at night we carried home in our packs eleven 

 pickerel, all frozen hard, and bent and curved just as they 

 happened to twist themselves before freezing. We put 

 them into a trough of running spring water, and when 

 thawed out found six of them alive. The others had prob- 

 ably been caught in the warmest part of the day, and died 

 before they froze. The same day fifteen fine brook trout 

 were brought from Lake Andrew, five miles distant, in a 

 pack, and on being thawed out several of them revived, 

 though I did not notice how many. They are, however, a 

 much more delicate fish than the pickerel or perch, and 

 more easily hurt and killed than either of them. 



* Compare Evibryologie des Sal/nones, C. Vogt, p. 17. 



