Fig. 390.— Inclined anticline. (Van Hise, U. S. Geol. Surv.) 



Fig. 391. — Recumbent anticline. (Van Hise, U. S. Geol. Surv.) 



Fig. 392, — Syncline, C. & O. canal, 3 miles west of Hancock, j\Id. The beds are shale 

 and sandstone near base of the Silurian. (Walcott, U. S. Geol. Surv.) 



