A grotto with green illumination (the Grotto Verde) is situated upon the opposite side of the island, and a blue grotto, having its origin in similar conditions to those of the famous Blue Grotto, is found upon the island of Busi off the Dalmatian coast. =Character profiles.=—In the landscape of a coast which has been slowly uplifted the characteristic line is the profile of the cuesta, with short perpendicular element joined to a gently sloping and longer section and continued in the horizontal portion corresponding to the lowland (Fig. 290). Rapidly uplifted coasts offer in contrast the lines characteristic of wave erosion and deposition, but at higher levels and in repeated sections. Most prominent of all is the staircase constructed of coast terraces, with either vertical or sloping risers and with outwardly inclining and gently graded treads. Near the steep riser in the staircase may sometimes be seen the sugar-loaf outline of the stack cut in softer material, or the obelisk-like pillar undercut at its base, which is carved in firmer rock masses. With excessively rapid uplift, the double-notched cliff or the double sea arch may appear in the landscape. Upon a submerged coast the most significant lines in the view are those of the rock islet and the steep-walled fjord. [Illustration: FIG. 290.—Character profiles in coast landscapes where there has been either elevation or depression.] READING REFERENCES FOR CHAPTER XIX General:— SIR CH. LYELL. Principles of Geology, vol. 2, pp. 180-197. ED. SUESS. The Face of the Earth, Clarendon Press, Oxford, 1906, vol. 2, Chapters i and xiv, pp. 1-29, 535-556. ROBERT SIEGER. Seenschwankungen und Strandverschiebungen in Scandinavien, Zeit. d. Gesell. f. Erdk., Berlin, vol. 28, 1893, pp. 1-106, 393-688, pl. 7. Elevated shore lines:— F. B. TAYLOR. The Highest Old Shore Line of Mackinac Island, Am. Jour. Sci., vol. 43, 1892, pp. 210-218. THOMAS L. WATSON. Evidences of Recent Elevation of the Southern Coast of Baffins Land, Jour. Geol., vol. 5, 1897, pp. 17-33. J. W. GOLDTHWAIT. The Abandoned Shore Lines of Eastern Wisconsin. Bull. 17, Wis. Geol. and Nat. Hist. Surv., 1907, pp. 134, pls. 1-37. Evidences of depression:— W. B. SCOTT. Introduction to Geology, New York, 1907, pp. 33-36. W. J. MCGEE. The Gulf of Mexico as a Measure of Isostacy, Am. Jour. Sci. (3), vol. 44, 1892, pp. 177-192. A. LINDENKOHL. Notes on the Submarine Channel of the Hudson River, etc., Am. Jour. Sci. (3), vol. 41, 1891, pp. 489-499, pl. 18. J. W. SPENCER. The Submarine Great Cañon of the Hudson River, _ibid._ (4), vol. 19, 1905, pp. 1-15; Submarine Valleys off the American Coast and in the North Atlantic, Bull. Geol. Soc. Am., vol. 14, 1903, pp. 207-226, pls. 19-20. F. NANSEN. The Bathymetrical Features of the North Polar Sea, with a Discussion of the Continental Shelves and Previous Oscillations of Shore Line, Norwegian North Polar Expedition, vol. 4, 1904, pp. 99-231, pl. 1.