1 Not only can codicils be made after a will, but a man dying intestate can create trusts by codicils, though Papinian says that codicils executed before a will are invalid unless confirmed by a later express declaration that they shall be binding. But a rescript of the Emperors Severus and Antoninus decides that the performance of a trust imposed by codicils written before a will may in any case be demanded, if it appears that the testator had not abandoned the intention expressed in them. 2 An inheritance can neither be given nor taken away by codicils, nor, accordingly, can a child be disinherited in this way: for, if it were otherwise, the law of wills and of codicils would be confounded. By this it is meant that an inheritance cannot directly be given or taken away by codicils; for indirectly, by means of a trust, one can very well be given in this manner. Nor again can a condition be imposed on an instituted heir, or a direct substitution be effected, by codicils. 3 A man can make any number of codicils, and no solemnities are required for their execution. BOOK III. TITLE I. OF THE DEVOLUTION OF INHERITANCES ON INTESTACY A man is said to die intestate who either has made no will at all, or has made one which is invalid, or if one which has been duly executed has been subsequently revoked, or rescinded, or finally, if no one accepts as heir under the testament. 1 The inheritances of intestate persons go first, by the statute of the Twelve Tables, to family heirs;