http://www.legislation.gov.uk/apgb/Geo3/10/51/section/19Entail Improvement Act 1770
An Act to encourage the improvement of lands, tenements, and hereditaments, in . . . Scotland, held under settlements of strict entail.1972-12-31texttext/xmlenStatute Law Database2011-05-261991-02-01
Entail Improvement Act 1770specified amended provision(s)The Abolition of Feudal Tenure etc. (Scotland) Act 2000 (Commencement No. 2) (Appointed Day) Order 2003art. 2commencement order for 2000 asp 5
Heirs of entail, <Abbreviation Expansion="et cetera" xml:lang="la">etc.</Abbreviation> sued on account of improvements, shall be discharged, on payment of one third of their rents.19Provided also, that when the heirs and successors of an heir of entail, in any other than the entailed estate, are sued for the money due on account of improvements made upon an entailed estate under the authority of this Act, they shall be discharged in all cases from such suits, upon making payment of one third part of the rents of the entailed estate which have come to the use of such heir of entail, or to the use of his said heirs or successors.