Christmas is both a holiday and a holy day, and from the start it has been associated with poetry, from the song of the seraphim above the manger to the cherished carols around the punch bowl. This garland of Christmas poems contains not only the ones you would insist on finding here (``A Visit from St. Nicholas,`` ``Lo, How a Rose E'er Blooming,`` and ``The Twelve Days of Christmas`` among them) but such equally enchanting though lesser-known Yuletide treasures as Emily Dickinson's ``The Savior must have been a docile Gentleman,`` Anthony Hecht's ``Christmas Is Coming,`` Rudyard Kipling's ``Christmas in India,`` Langston Hughes's ``Shepherd's Song at Christmas,`` Robert Graves's ``The Christmas Robin,`` and happy surprises like Phyllis McGinley's ``Office Party,`` Dorothy Parker's ``The Maid-Servant at the Inn,`` and Philip Larkin's ``New Year Poem.