— — —, —, Prof. Alexander, September, 1839, xxxix, 364.

— — —, —, D. Olmsted, Jan., 1837, xxxii, 177.

— — —, —, ibid, Nov., 1835, xxix, 389.

— — —, —, E. C. Herrick, Sept., 1839, xxxviii, 260.

— — —, —, C. Dewey, Sept., 1839, xxxviii, 147.

— —, needle agitated by, M. Arago, xiv, 107; xxxiv, 286.

— —, — —, remarks on, xix, 246.

— —, — —, Aug., 1827, L. D. Gale, xv, 199.

— —, — —, Apr., 1831, J. Henry, xxii, 143.

— —, — —, May and July, 1833, A. D. Bache, xxvii, 113.