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JEARTIIY MARL. 193 3. Masses of stinkstone and limestone, of various sizes and shapes, occur in the beds of marl-earth, which at first sight might be confounded with fragments, although, " hen closely examined, they prove to be of cotempora- neous formation with it. Second Subspecies. Compact or Indurated Marl. Verhiirteter Mergel, Werner. Verhartcter Mergel, Wid. s. 524.—Indurated Marl, Kinr. vol. i. p. 95.—Verhartcter Mergel, Emm. b. i. s. 493.—Mania in- duritn, Nap. p. 861.—La Mume endurcie, Brock, t. i. p. 571. —Argile calcifere, 011 Marne, Ilauy, t. iv. p. 445.—Verh'ar- tcter Merge!, Beuss, b. ii. 2. s. 341. Id. Lud. b. i. s. 156. Id. Suck, lr th. s. 642. Id. Bert. s. 115. Id. Mohs, b. ii. s. 130. Id. Hub. s. 73. Id. Leonhard, Tabel. s. 36. Id. Karst. Tabel. s. 50. Id. Haus. s. 127. Id. Lenz, b. ii. s. 779- —Stein Mergel, 01;cn, b. i. s. 407—Marl, Aikjn, p. 141. External Characters. Its colours are yellowish and greyish white; smoke ry, bluish-grey, and greenish-grey; greyish-black ; •oountain-green, verdigris-green, and asparagus-green; and cream-yellow. It is sometimes spotted reddish and brownish in the rents, and marked with dendritic deli- ne ations. It occurs massive, in blunt angular pieces, vesicular, in flattened balls ; and frequently contains petrifactions ot fishes and crabs, also gryphites, belemnites, chamites, P e ctinites, ammonites, terebratulites, ostracites, muscu- lites, and mytulites. II. N ‘ It