. The testimony of the rocks; . CALAMITES MOUGEOTII. SPHENOPHTLLUM DENTATUM. Calamites,—reed-like, jointed plants, that more nearly re-semble the Equisetacete than aught else which now exists, 64 THE PALiEONTOLOGICAL but which attained, in the larger specimens, to the heightof ordinary trees, also manifest very decidedly, in theirinternal structure, some of the characteristics of the coni-fers. It has been remarked by Lindley and Ilutton of evenSphenophyllum,— a genus of plants with verticillate leaves,of which at least six species occur in our Coal Measures,and which Brogniart refers to one o
. The testimony of the rocks; . CALAMITES MOUGEOTII. SPHENOPHTLLUM DENTATUM. Calamites,—reed-like, jointed plants, that more nearly re-semble the Equisetacete than aught else which now exists, 64 THE PALiEONTOLOGICAL but which attained, in the larger specimens, to the heightof ordinary trees, also manifest very decidedly, in theirinternal structure, some of the characteristics of the coni-fers. It has been remarked by Lindley and Ilutton of evenSphenophyllum,— a genus of plants with verticillate leaves,of which at least six species occur in our Coal Measures,and which Brogniart refers to one of the humblest familiesof the fern allies,—that it seems at least as nearly relatedto the Coniferse as to its lowlier representatives, the Mar-sileacese. And it is this unfon of traits, pertaining to whatare now widely separated orders, that unparts to not a fewof the vegetables of the Coal Measures their singularlyanomalous character. Let me attempt introducing you more intimately to oneof those plants which present scar
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