The spawning run

William Humphrey's delightful chronicle of an angling holiday in Wales celebrates two equally astonishing creatures: the Atlantic salmon and the British fly fisherman In order to mate in the same freshwater stream where it was spawned, the salmon swims 1,000 miles or more and overcomes countless obstacles, from trawling nets to 12-foot-high waterfalls. To catch the King of Fish at the end of its incredible journey, the Anglo-Saxon angler subjects his pride, his bank account, and his taste buds - poached milk, anyone? - to similar dangers. Nine out of 10 salmon do not make it back to the sea…