Seamus Heaney's new collection starts "In an age of bare hands and cast iron" and ends as "The automatic lock / clunks shut" in the eerie new conditions of a menaced twenty-first century. In their haunted, almost visionary clarity, the poems assay the weight and worth of what has been held in the hand and in the memory. Images out of a childhood spent safe from the horrors of World War II - railway sleepers, a sledgehammer, the "heavyweight / Silence"...