Lat. In the clvll and old English law. The washing up of the sea; formation of soil or land from the sea; maritlme lncrease. Hale, Anal. $ 8. "Alluvia maris is an increase of the land ad-joining, by the projection of the sea, casting up and adding sand nnd slubb to the adjoin-l.ng land, whereby it is lncreased, and for the most part by insensible degrees.” Hale, de Jure Mar. pt. 1, c. 6