—, a property of asbestus imbued with chloride of, xx, 160.
—, chloriodide of, W. W. Mather, xxvii, 258.
— and hydrogen, no combination of, J. W. Döbereiner, xxxiv, 207.
— and soda, a double sulphite of the protoxide of, A. Litton and Schnederman, xliv, 274.
—, iodide of potassium and, W. W. Mather, xxvii, 257.
Plesiosaurus, from north of Whitby, England, xxix, 364.
—, notice of, xvii, 289.
Plessy, on the hydrosulphite of soda, xlix, 200.
Pleurodon, R. Owen, xliv, 342.
Pliny, on the influence of the ash on reptiles, xxx, 268.