18. Claims for transport and mileage allowances
Claims for transport and mileage allowances shall be submitted at the end of each month to the Treasury and shall be accompanied by the following certificate from the officer claiming the allowance:
“I certify that I have during the month of ................................................ kept as my own private property a .......................................... in respect of which this allowance is claimed and that it has been available for use on Government service throughout the month .............................. for ........................ days during .......................................
I further certify that I have been on duty during the whole period in respect of which the allowance is claimed and that all travelling on private business and pleasure has been excluded from the total mileage making up this claim.