I just found out that the dictionary gives a second meaning for "kennel" = gutter
"Carrying her as tenderly, and as easily too, as if she had been an infant, and showing himself both swift and sure of foot, he led the way through what appeared to be the poorest and most wretched quarter of the town; and turning aside to avoid the overflowing kennels or running waterspouts, but holding his course, regardless of such obstructions, and making his way straight through them. They had proceeded thus, in silence, for some quarter of an hour, and had lost sight of the glare to which he had pointed, in the dark and narrow ways by which they had come, when it suddenly burst upon them again, streaming up from the high chimney of a building close before them."