The American Journal of Science and Arts, Volume 50 (First Series) / General Index to Forty-Nine Volumes

by Various

gypsum of Canfield, 34;

ponds of Portage Co., 35;

Lymnæa stagnalis and Helices, &c., 35.^f

—, miscellaneous notices of, S. P. Hildreth, xxxi, 1;

–Portage Co., 37;

Ohio and Pennsylvania canal, 40;

Brady's Pond, 42;

Falls of the Cuyuhoga, 45^f;

travertine, 50;

marl beds, 55;