—, new discoveries with the spectrum, xliv, 163, 164.
—, dichroism of some palladio-chlorides, xliv, 165.
—, on the cause of muscæ volitantes, xl, 333.
—, on the decomposition of glass, and on the polarization of decomposed glass, xl, 324, 325.
—, on the line of visible direction, along the axis of vision, xl, 334.
—, cause of increase of color when objects are seen with the head inverted, xl, 343.
—, action of gaseous and other media on the solar spectrum, xlii, 157.
Brewster's (Gilbert) frame for spinning wool, notice of, x, 130.
Brewsterite, xx, 198.
Bricks of the ancients, xxvi, 234.