Note AH — Chapter VI
Reading edition
A concretionary limestone of the Old Red system in England, variegated with purple and green, was at one time wrought as a marble.—Silurian System, Part i. p. 176.
Reading edition
A concretionary limestone of the Old Red system in England, variegated with purple and green, was at one time wrought as a marble.—Silurian System, Part i. p. 176.