Read it through once

The speaker, a Spaniard, it must be supposed, describes to his companion the only poet he knew in his life, who roamed along the promenades and through the by-streets and lanes and alleys of Valladolid, an old dog, bald and blindish, at his heels. He appeared interested in whatever he looked on, and his looks went everywhere, taking in the cobbler at his trade, the man slicing lemons into drink, the coffee-roaster’s brazier, and the boys turning its winch; books on stalls, strung-up fly-leaf ballads, posters by the wall;