Note 60 — Chapter X

Though I have never observed molluscan remains in the limestone of Burdiehouse, they are abundant twelve miles to the west, in the equivalent strata around Mid-Calder, one little gastropod being especially plentiful near the base of the calcareous rock in a seam known to the quarrymen as the "Buckie fake." I have not met with specimens sufficiently perfect for identification, the hard splintery nature of the rock seldom allowing anything but a cross-section to be seen save on weathered specimens, where the general contour of the shells has sometimes reminded me of Paludina multiformis grouped together in a recent fresh-water marl. In the shales above the Burdiehouse limestone, Dr Hibbert states he found a unio (?), called by him U. nuciformis. Trans. Roy. Soc. Edin. vol. xiii. p. 245.