Rich, C., effects of lightning on the packet ship New York, xxxvii, 321.
Rich, E., project for reforming the English alphabet, xlvii, 420.
Richardson, J., on the Zoology of North America, xxxi, 343, 356, 376.
Riddell, J. L., new construction of the barometer, xxvii, 223.f
—, a new mode of preserving plants, xxxv, 338.
—, on the geological features of Ohio, xxx, 394.
—, electro-magnetic engine, xxxv, 343.f
—, Texas, Trinity country, xxxvii, 211.
—, on Hog Wallow Prairies, Texas, xxxix, 211.
Riench's test for arsenic, medicolegal application of, xliv, 240.