—, on some of the vegetable materials from which cordage, twine and thread, are made, xxi, 27.

— and H. Perrine, on the plants used for cordage, xxv, 330.

—, on descents in diving bells, xxii, 327.

Measure of a French metre compared with an English yard, xxi, 382.

Mécanique Céleste, translated by N. Bowditch, xix, 202; xxxv, 17.

Mechanics, analytic, a new general principle of, Jacobi, xliv, 170.

—, experiment in, xxii, 362.

—, review of Allen's, xvii, 338.

Meconic acid, R. Hare, xii, 293.

Meconine, remarks on, xxiii, 380.