Red from the hills, innumerable streams
Tumultuous roar[1],
the colour of his torrents betrays their Scottish origin. He was thinking of the spates in his native streams which sweep across tracts of Old Red Sandstone, and come down almost brick-red in hue. There are no red rocks, and therefore no red brooks in Middlesex and the surrounding districts.
But before the completion of the 'Seasons' the influence of English lowland scenery had begun to impress itself on Thomson's imagination. The softer and ampler landscape of fruitful plains, with its richer agriculture and fuller population, its farms, villages, and country houses, filled his mind with a new pleasure. Some trace of this widened experience may be seen in the additions successively made to the earlier poems, such as the picture of Hagley Park introduced into the poem on 'Spring.' But it was in his last effusion, 'The Castle of Indolence,' that this English influence gained entire sway, and the Scottish memories faded into the background. Here we find ourselves amid the typical landscapes of the south of England—landscapes, however, so transfused by poetic genius as to acquire an individuality of their own. We are led into 'a lowly dale fast by a river's side'; we wander through 'sleep-soothing groves and quiet lawns between'; we see 'glittering streamlets' in a sunny glade; we skirt a 'sable, silent, solemn forest'; and pass a 'wood of blackening pines,' which runs up the hills on
