The fees of inspectors shall be paid by the purchaser or exporter of the articles inspected, and if any inspector shall receive any greater fees than are by law allowed, he shall forfeit and pay ten dollars ($10.00) for every offense to any person suing for the same. (1824, c. 1254, ss. 1, 2; R.C., c. 60, s. 79; Code, s. 3055; Rev., s. 4673; C.S., s. 5075.)