CHAPTER XV.. The Two Valleys.--the Lake with a Leaky Bottom.--the Water Could

The Two Valleys.--The lake with a leaky Bottom.--The Water could not have been higher.--Nor could the Lagunas or Ponds have been much deeper.--The Brigantines only flat-bottomed Boats.--The Causeway Canals fix the size of the Brigantines.--The Street Canals.--Stagnant Water unfit for Canals.--The probable Dimensions of the City Canals.--Difficulties of disproving a Fiction.--A Dike or Levee.--The Canal of Huehuetoca.--The Map of Cortez.--Wise Provision of Providence.--The Fiction about the numerous Cities in and about the Lake 176