ARITHMETICAL COMPLEMENT, of a Logarithm, is what the Logarithm wants of 10.0000000.

See COMPLEMENT. Thus the Arithmetical Complement of 7.1079054, is 2.89209463; where each Figure, but the last, is subtracted from 9; and that from 10. See LOGARITHM.

Arithmetic Progression, see Progression.

Arithmetical Proportion, see Proportion.

Arithmetical Medium or Mean, see Medium.