ITS.
His is the genitive (or as we say, possessive) of he, (he’s,—his,) and it or hit, as it was long written, is the neuter of he, the final t being the sign of the neuter. The introduction of its, as the neuter genitive instead of his, arose from a misconception, similar to that which would have arisen had the Romans introduced illudius as the neuter genitive of ille, instead of illius. Its very rarely occurs in our authorized version of the Bible, his or her being used instead—occurs but a few times in all Shakspeare—was unknown to Ben Jonson—was not admitted into his poems by Milton—and did not come into common use until sanctioned by Dryden.