— —, — —, Feb., 1835, M. Gauss, xxxiv, 285.
— —, — —, Nov., 1835, xxix, 390.
— —, — —, April, 1836, J. McCaffrey, xxxi, 85.
— —, — —, Jan., 1837, xxxii, 179.
— —, — —, July, 1837, E. C. Herrick, xxxiii, 146.
— —, — —, Nov., 1837, A. B. Haile, xxxiv, 270.
— —, — —, Sept., 1839, E. C. Herrick, xxxviii, 261.
— —, — —, May, 1840, Canada, xl, 337.
— —, wide extent of some, E. C. Herrick, xxxiii, 300.
— —, remarks on the number in Europe, xxviii, 58.