 " Trees were favorite symbols for Yeats , Frost , and even the young Pound . ... But Kilmer had been reading about trees in another context [ , ] the movement to stop child labor and set up nursery schools in slums . ... Margaret McMillan ... had the happy idea that a breath of fresh air and an intimate acquaintance with grass and trees were worth all the pencils and <unk> in the whole school system . ... The English word for <unk> equipment is ' apparatus . ' And in her book Labour and Childhood ( 1907 ) you will find this sentence : ' <unk> can be made by fools , but only God can make a <unk> 
