—, on the iron in, xv, 169.
—, manganese in, xxi, 370.
—, gases contained in, and on respiration, G. Magnus, xxxv, 198.
—, peculiar principle of, xviii, 148.
—, mode of preserving, xxi, 370.
— of a dog, Filariæ in, xlv, 228.
Bloodgood, S. D., on the Hudson and Mohawk railroad, xxi, 141.
Blowing machinery of a furnace, investigations respecting, by A. B. Quinby, xii, 128.
— —, phenomenon exhibited by, xiii, 395; xiv, 395.
— —, ibid, explanation of, xv, 362.f