. The Bible and science. eculiar forms,and covered with an armour of hard enamel. Coral,ferns, and pieces of wood also occur. It is in the next, the Carboniferous formation,or Coal Measures, that we find the greatest develop-ment of plant life. The seams of coal, to which, ingreat measure, England owes her wealth and power,consist of the stems, roots, and leaves of trees, Lepi-dodendrons and Sigillarias. The former bore noresemblance to the trees of our present forests, butbelonged to the same class of plants as the club-mosses, which we now find growing about our Scotchheaths and near our j^e
. The Bible and science. eculiar forms,and covered with an armour of hard enamel. Coral,ferns, and pieces of wood also occur. It is in the next, the Carboniferous formation,or Coal Measures, that we find the greatest develop-ment of plant life. The seams of coal, to which, ingreat measure, England owes her wealth and power,consist of the stems, roots, and leaves of trees, Lepi-dodendrons and Sigillarias. The former bore noresemblance to the trees of our present forests, butbelonged to the same class of plants as the club-mosses, which we now find growing about our Scotchheaths and near our j^eat mosses. Sigillarias are thestems of a kind of gigantic mares tail. The roots ofSigillaria were once supposed to be the stems of adifferent plant, and were called Stigmaria. T 2 276 PALEOZOIC FOSSILS—CARBOXIFEROTJS. During this formation, the climate must have beenwarmer than at the present day, and the same land onwhich tliis luxuriant vegetation grew must have beengradually subsiding, so that the accumulations grew. (^^;^=^s=fas^ Fio. 12G.—Sigillaria attaclied to stigmarian roots
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