CHAPTER X.

=EQUISETALES (_continued_).= Pp. 295–388.

D. CALAMITES 295–383

I. =Historical sketch= 295–302

II. =Description of the anatomy of Calamites= 302–364 _a._ _Stems_ 304–329 _Arthropitys_, _Arthrodendron_, and _Calamodendron_. _b._ _Leaves_ 329–342 α. _Calamocladus_ (_Asterophyllites_) 332–336. _C. equisetiformis_ 335–336. β. _Annularia_ 336–342. _A. stellata_ 338–340. _A. sphenophylloides_ 341–342. _c._ _Roots_ 342–349 _d._ _Cones_ 349–365 _Calamostachys Binneyana_ 351–355. _C. Casheana_ 355–357. _Palaeostachya vera_ 358–360. _Calamostachys_, _Palaeostachya_ and _Macrostachya_ 361–364.

III. =Pith-casts of Calamites= 365–380 _Calamitina_ 367–374. _Calamites_ (_Calamitina_) _Göpperti_ 372–374. _Stylocalamites_ 374–376. _C._ (_Stylocalamites_) _Suckowi_ 374–376. _Eucalamites_ 376–379. _C._ (_Eucalamites_) _cruciatus_ 378–379.

IV. =Conclusion= 381–383

E. ARCHAEOCALAMITES 383–388 _A. scrobiculatus_ 386–387.