—, scraps in natural history, xlvi, 236; xlviii, 93.
—, horticultural experiments, xl, 197.
—, on the dry-rot, xlii, 197.
—, combustibility of wood ashes, xlii, 167.f
—, on a dangerous property of wood ashes, xliii, 80.
Plumose mica, ii, 141.
Pluranium, announced as a new metal, from the Ural, xvi, 384.
Pluviometrical observations, see under [Rain] and [Meteorological.]
Pneumatic cistern of R. Hare, xiv, 200f; xxxiii, 246.f
— paradox, on the true theory of, J. H. Abbot, xxxix, 296f; xl, 144.f