[619] entra por mucho, plays an important part.
[620] entre las temblonas pinceladas del gas, among the quivering gleams of gas lights.
[621] toma blancuras de leche, becomes milk-white.
[622] la Mancha, region in New Castile, Spain, birthplace of Don Quijote, hero of Cervantes’ novel, The Ingenious Gentleman Don Quijote of La Mancha. The esforzado hidalgo mentioned in line 5 is Don Quijote.
[623] a su encuentro, to meet him.
[624] se pierden de vista, are lost to view.
[625] en cuesta, on a slope.
[626] Salambó, novel by Flaubert, the great French novelist of the nineteenth century. It depicts life in Carthage.
[627] les da con un pie en la amplia grupa, shoves them off.
[628] apartando puentes, causing bridges to be drawn.