substitutes

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
SUBSTITUTES, Scotch law. Where an estate is settled on a long series of 
heirs, substituted one after another, in tailzie, the person first called in 
the tailzies, is the institute; the rest, the heirs of tailzie; or the 
substitutes. Ersk. Princ. L. Scotl. 3, 8, 8. See Tailzie; Institute. 
    

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