In order for a plaintiff to enforce a private right by mandamus he must show pecuniary loss for which he cannot be compensated in damages. History. Code 1933, § 64-105. History of Section. The language of this Code section is derived in part from the decisions in At- lantic Ice & Coal Corp. v. Town of Decatur, 154 Ga. 882, 115 S.E. 912 (1923), and Board of Comm’rs v. Montgomery, 170 Ga. 361, 153 S.E. 34 (1930).