Section 602. Expenses of sheriff for transporting prisoners

For conveying
  a prisoner or prisoners to a state prison from the  county  prison,  the
  sheriff  or person having charge of the same shall be reimbursed for the
  amount of expenses actually and necessarily incurred by him for railroad
  fare or cost of other transportation and  for  cost  of  maintenance  of
  himself  and  each prisoner in going to the prison, and for his railroad
  fare or other cost of transportation in returning home, and cost of  his
  maintenance  while  so  returning.  The county shall be reimbursed for a
  portion of the salary of such sheriff or person for the period,  not  to
  exceed  thirty-six  hours,  from the commencement of transportation from
  the county prison to the return of such sheriff or person to the  county
  prison, the amount of such reimbursement to be computed by adding to the
  amount  of  such  salary  the  total  amount  of  the aforesaid expenses
  incurred for transportation and maintenance and reducing  the  resulting
  aggregate  amount,  first,  by fifty per centum of such aggregate amount
  and, second, by the total amount of the aforesaid expenses incurred  for
  transportation and maintenance.