—, on the culture of silk in the United States, xvii, 202; xviii, 278.
—, obituary of, xxv, 216.
Pasco silver mines, xvii, 43f; xxiv, 232.
Pasquier, A. du, iodine a reagent for hydrosulphuric acid, xl, 123.
Passeres, new species of, xxxi, 192.
Passiflora Warei, v, 297.
Paste, mode of preserving, vii, 379.
Pasteboard roofs, xxiv, 381.
Pastils, use and preparation of alkaline, for calculus, xi, 388.
Pasture, spring, E. Ives, iii, 355.