Stephen Johnson Field,
Slidell v. Grandjean — Opinion of the Court
“ As no back line is designated to the second grant, its dimensions must be found, if at all, in the limitation to such grants imposed upon the authority of the governor by positive law or established usage. As seen from the opinion of the court in Surgett v. Lapice, it was the invariable custom of the Spanish government to reserve lands in the rear of grants on the river, to a depth of 40 arpents, for the use of the front proprietors. They were always regarded as having a preference right to become the purchasers of those lands; they were never granted to other parties. ”
