Fulminic acid, composition of, x, 191.

Fumigation, x, 379.

—, in Sweden, vii, 188.

Functions, relation of Sturm's, auxiliary to the roots of an algebraic equation, Prof. Sylvester, xlii, 163.

Functional equation, solution of, G. R. Perkins, xlii, 69.

Fungi, composition of, xlix, 393.

Furnace for ventilating sewers, R. Bulkley, vii, 177.

—, hot blast, T. Clark, xxxi, 180.

—, — —, saving by, xxviii, 71.