The LDS Family History Library Catalogue has a note defining perpetuities: "Perpetuities are the perpetual right of burial in a plot of ground". So once interred, a body would remain undisturbed, as opposed to the practice of burying someone else in the same plot after a given number of years. This practice was common and even headstones were removed and used as paving stones and for other purposes that would shock us today. We could go on and mention what often happened to the skeletal remains; but it would not be tasteful. The Registers of Perpetuities may as well be named Burial Registers. As I have viewed Mount Jerome Registers on LDS m/f and all the information is there concerning the individual, address, cause of death, burial plot etc. There is one column titled, "No. of Grant in Perpetuity". Most often there is an entry in this column; but not always. This would imply that those without an entry do not have the security of "Perpetuity". So it would be safe, for instance, to order LDS m/f such as # 91063, which is for the period 1848-1858. Brian Loughnan, Searching Loughnan/e, Tomkins, Sullivan in Limerick, Cork and Kerry.