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Photograph from John N. Cobb 
A REMARKABLE PICTURE OF SALMON SPAWNING ON A GRAVELLY RIFFLE IN A PACIFIC COAST STREAM 
'I'here are five species of Pacific salmons, and all of them have the remarkable habit of dying after once spawning. This applies to both sexes, and was a wise 
provision of nature to prevent overstocking. The only other American food fish with this habit is the common eel, which spawns and dies at sea. 
