(1) For the purposes of this Act, a person is deemed to take a gift, where, under or in consequence of any disposition, a person becomes beneficially entitled in possession, otherwise than on a death, to any benefit (whether or not the person becoming so entitled already has any interest in the property in which such person takes such benefit), otherwise than for full consideration in money or money's worth paid by such person.
(a) to consist of the whole or the appropriate part, as the case may be, of the property in which the donee takes a benefit, or on which the benefit is charged or secured or on which the donee is entitled to have it charged or secured, and
(b) if the benefit is an annuity or other periodic payment which is not charged on or secured by any property and which the donee is not entitled to have so charged or secured, to consist of such sum as would, if invested on the date of the gift in the security of the Government which was issued last bef
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