Compiled over forty years, latterly with assistance from two daughters Flora and Jane, these perhaps surpass in accuracy the (also unpublished) French 'Cadastre' tables of 1801.
Compiled mahigit apatnapu taon, sa susunod na panahon na may tulong mula sa dalawang anak Flora at Jane, ang mga ito marahil malampasan sa kawastuhan ng (din-publish) French 'kadastre' talahanayan ng 1801.