13 - Expenses.

§ 13. Expenses.     All  officers,  clerks,  inspectors,  experts  and  employees of the commission shall receive the compensation fixed by  the  chairman  of  the commission within the amounts appropriated therefor by  the legislature. The commissioners and counsel  to  the  commission  may  receive,  in  lieu  of  expenses,  twenty-five  dollars  per  day, and a  proportionate amount thereof for each fraction of a day,  while  engaged  in  the performance of official duties at a place other than the city to  which they are regularly assigned,  and  shall  be  reimbursed  for  the  actual  and  necessary  cost  of  transportation  incurred by them; this  provision, however, shall  not  be  applicable  to  the  chairman  or  a  commissioner receiving a definite sum in lieu of traveling expenses. The  officers,   clerks,   inspectors,  experts  and  employees,  shall  have  reimbursed to them all actual and necessary traveling and other expenses  and disbursements incurred or made by them in  the  discharge  of  their  official duties.