Every large assembly is, moreover, a fluctuating body; it is not one house, so to say, but a set of houses; it is one set of men tonight and another tomorrow night. A certain unity is doubtless preserved by the duty which the executive is supposed to undertake, and does undertake, of keeping a house; a constant element is so provided about which all sorts of variables accumulate and pass away. But even after due allowance for the full weight of this protective machinery, our House of Commons is, as all such chambers must be, subject to sudden turns and bursts of feeling, because the members who compose it change from time to time. The pernicious result is perpetual in our legislation; many Acts of Parliament are medleys of different motives, because the majority which passed one set of its clauses is different from that which passed another set.