1853.] DAWSON — COAL-MEASURES, NOVA SCOTIA. 35 



Fig. 12. — Erect Calamites, from Group XVI. (see p. 6). 



CC(T 



Natural size. 



Half natural size. 



Fig. 13. 



Root of Calamite, from 

 Group XXIII. {magni- 

 fied). 



Fig. 14. 



Erect Calamite, with roots ; 

 from Group XV. 



Fig. 16. 



Leaves of Calamite; from 

 Group XXIII. (p. 4). 



Fig. 15. 



Erect Calamite, constrict- 

 ed by pressure ; South 

 Joggins. 



One-sixth natural size 



