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Los Angeles to San Diego.
The railway east of San Luis Capistrano runs along the sea and offers a number of well defined sections. These consist of vertical or nearly vertical bluffs of nearly horizontal strata of sand, gravel and cly slates or limy claystone more or less indurated. The upper portion is always sand or sandstones of yellowish brown tint with a basal layer of gravel above which the sandy strata may be uniform or divided by other gravelly layers, and is surrounded by a thin coating of soil. Below the gravel are sometimes quite massive beds of uniform grayer sandstone with an occasional line of white material indicating an alkaline stratum which effloresces to the weather. Below these are the gray claystones in layers 6'' to 1' thick which weather rounded contrasting with the vertical lines