Analysis of A Niagara Landscape

Heavy with haze that merges and melts free
    Into the measureless depth on either hand,
    The full day rests upon the luminous land
  In one long noon of golden reverie.
  Now hath the harvest come and gone with glee.
    The shaven fields stretch smooth and clean away,
    Purple and green, and yellow, and soft gray,
  Chequered with orchards. Farther still I see
  Towns and dim villages, whose roof-tops fill
   The distant mist, yet scarcely catch the view.
 Thorold set sultry on its plateau'd hill,
     And far to westward, where yon pointed towers
   Rise faint and ruddy from the vaporous blue,
     Saint Catharines, city of the host of flowers.