. The testimony of the rocks; . CYCLOPTETIIS HIBERNICUS. (Nat. size.) HISTORY OF PLANTS. 43 trees as certainly as herbs, the palseontological bot-antist finds that he has, m consequence, to range his classes, Fig. CONIFER OF THE LOWER OLD RED SANDSTONE. Cromarty. (Mag. forty diameters.) not in one series, but in two, — the Gynmogens, or cono-bearing trees, in a line nearly parallel with the Acrogens,or flowerless, spore-bearing herbs. But the arrangement isin no degree the less striking from the circumstance that itis ranged, not in one, but in two lines. It is, however, anuntoward arrange
. The testimony of the rocks; . CYCLOPTETIIS HIBERNICUS. (Nat. size.) HISTORY OF PLANTS. 43 trees as certainly as herbs, the palseontological bot-antist finds that he has, m consequence, to range his classes, Fig. CONIFER OF THE LOWER OLD RED SANDSTONE. Cromarty. (Mag. forty diameters.) not in one series, but in two, — the Gynmogens, or cono-bearing trees, in a line nearly parallel with the Acrogens,or flowerless, spore-bearing herbs. But the arrangement isin no degree the less striking from the circumstance that itis ranged, not in one, but in two lines. It is, however, anuntoward arrangement for the purposes of the Lamarckian,whose peculiar hypothesis Avould imperatively demand, nota double, but a single column, in which the ferns and clubmosses would stand far in advance, in point of time, of theConiferge. In the Coal Measures, so remarkable for thegreat luxuriance of tL^ir flora, both the G}Tnnogens andAcrogens are largely developed, with a very puzzling inter- 44 THE PALJLONTOLOGICAL mediate class, that, while they attained to the size of trees,like the former, retained in a remarkable degree, as in tlieLepidodendra and the Calamites, the peculiar features ofthe latter. And with these th
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