Ichthyolite Beds--An interesting Discovery--Two Storeys of Organic Remains in the Old Red Sandstone--Ancient Ocean of Lower Old Red--Two great Catastrophes--Ancient Fish Scales--Their skilful Mechanism displayed by examples--Bone Lips--Arts of the Slater and Tiler as old as Old Red Sandstone--Jet Trinkets--Flint Arrow-heads--Vitrified Forts of Scotland--Style of grouping Lower Old Red Fossils--Illustration from Cromarty Fishing Phenomena--Singular Remains of Holoptychius--Ramble with Mr. Robert Dick--Color of the Planet Mars--Tombs never dreamed of by Hervey--Skeleton of the Bruce--Gigantic Holoptychius--"Coal money Currency"--Upper Boundary of Lower Old Red--Every one may add to the Store of Geological Facts--Discoveries of Messrs. Dick and Peach. 192 CHAPTER XII. Ichthyolite Beds of Clune and Lethenbarn--Limestone Quarry--Destruction of Urns and Sarcophagi in the Lime-kiln--Nodules opened--Beautiful coloring of the Remains--Patrick Duff's Description--New Genus of Morayshire Ichthyolite described--Form and size of the Nodules or Stone Coffins--Illustration from Mrs. Marshall's Cements--Forest of Darnaway--The Hill of Berries--Sluie--Elgin--Outliers of the Weald and the Oolite--Description of the Weald at Linksfield--Mr. Duff's _Lepidotus minor_--Eccentric Types of Fish Scales--Visit to the Sandstones of Scat-Craig--Fine suit of Fossils at Scat-Craig--True graveyard Bones, not mere Impressions--Varieties of pattern--The Diker's "Carved Flowers"--_Stagonolepis_, a new Genus--Termination of the Ramble. 212 CHAPTER XIII. SUPPLEMENTARY. Supplementary--Isolated Reptile Remains in Eigg--Small Isles revisited--The Betsey again--Storm bound--Tacking--Becalmed--Medusae caught and described--Rain--A Shoal of Porpoises--Change of Weather--The bed-ridden Woman--The Poor Law Act for Scotland--Geological Excursion--Basaltic Columns--Oolitic Beds--Abundance of Organic Remains--Hybodus Teeth--Discovery of reptile Remains _in situ_--Musical Sand of Laig re-examined--Explanation suggested--Sail for Isle Ornsay--Anchored Clouds--A Leak sprung--Peril of the Betsey--At work with Pump and Pails--Safe in Harbor--Return to Edinburgh. 233 PART II. RAMBLES OF A GEOLOGIST. CHAPTER I.