— — of Idria, xxix, 219.
Mercury, observations on the transit of, May, 1845, D. Olmsted, xlix, 142.
Meridian, measurement of, v, 190.
—, length of a degree of, T. J. Cram, xxxi, 222.f
—, formula for the establishment of a true, xxv, 261.f
Merino sheep, v, 189.
Mermaid, ii, 178; vi, 195.
Mesotype in N. Hampshire, xviii, 133.
— in New Jersey, v, 239; xl, 69.
Metagallic acid, Pelouze, xxviii, 126.