OCR Text |
Show Salmon and Acids. Investigators nay that salmon llr.il their way Into rivers by menus of the presence of acids er alkalis, which, Of course, varies In' different streams. Even when they are a long way out at sea, says the Youth's Companion, they can discover the trace that will lead them to the bay nnd the stream that they seek. It thus becomes unnecessary unneces-sary to appeal to a "homing Instinct" to explain the return of certain salmon to certain rivers or the "running" of herring to certain localities. |