In Halsbury 's Laws of England, 3rd Edn. Vol.32 at p. 534 (paragraph 899), the meaning of the word "annuity" is explained thus "An annuity is a certain sum of money payable yearly either as a personal obligation of the grantor or out of property not consisting exclusively of land." In Jarman on Wills at p. 11 13 "annuity" is defined thus "An annuity is a right to receive de anno in annum a certain sum; that may be given for life, or for a series of years; it may be given during any particular period, or in perpetuity; and there is also this singularity about annuities, that, although payable out of the personal assets, they are capable of being given for the purpose of devolution, as real estate; they may be given to a man and his heirs, and may go to the heir as real estate.