For this; for this special pur-pose. An attorney ad hoc, or a guardian or curator ad hoc, is one appointed for a spe-cial purpose, generally to represent the client or infant in the particular action in which the appointment is made. Sallier v. Rosteet, 108 La. 378, 32 South. 383; Blenvenu v. In-surnnce Co., 33 La. Anu. 212