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

by Various

—, apparatus for solidifying carbonic acid, xxxviii, 297^f; xlii, 203.

—, new crystals of beryl, from Middlelown, xl, 401.^f

—, on a large crystal of columbite from Middletown, Ct., xxx, 387.^f

—, sketch of the early history of Count Rumford, xxxiii, 21.

—, on shrinkage marks in sandstone, xlv, 315.

Johnston, J. F. W., blank form for statistical information on chemical education, xxxi, 414.

—, work by, on agriculture, noticed, xlii, 187.

Joints in rocks, W. W. Mather, xli, 172.

Jones, A., steamboats protected from lightning, xxii, 106.