SECTION I.. Represents the Old Red System of Scotland From Its Upper Beds of

Represents the Old Red System of Scotland from its upper beds of Yellow Quartzose Sandstone to its Great Conglomerate base. a. Quartzose Yellow Sandstone, b. Impure concretionary limestone enclosing masses of chert, c. Red and variegated sandstones and conglomerate. These three deposits constitute an upper formation of the system, characterized by its peculiar group of fossils. (See