CHAPTER III 



THE TEMPEllATUllE 



An Unusual Spectacle — The Explanation — Illustra- 

 tive Experiment — Looking for Rainbow Trout — 

 A Frost-bound Stream — The Clean Tidiness of 

 the Highlands — ^What's Wrong with the Cast ? — 

 Strange Beads — An Important Discovery — -How 

 Frost Acts on Lakes — "Snow Brew" — Tempera- 

 ture of the Air Unimportant — Still Water and 

 Running Water Show DiiFerent Phenomena — 

 Trout Influenced by Varying Temperatures — 

 How These Come About — Sport Suddenly Falls 

 Off — The Explanation, and the Remedy — Trout 

 Prefer the Shallows As a Rule — Do They Sleep ? 



In one of the preternatural excursions 

 conducted by M. Jules Verne, there was 

 a pleasing and instructive incident. The 

 explorers came upon a lake in arctic 

 regions. According to all known pre- 

 cedent, the water should have borne a 

 thick sheet of ice ; but it was quite open. 



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