SECTION 1. Section forty-eight of Act Numbered Twenty-three hundred and fifty-two as amended by section seven of Act Numbered Twenty-seven hundred and sixty-six, is hereby amended to read as follows:
"SEC. 48. All mail matter of whatever class relative to n the Philippine census and addressed to the Director, assistants, or any supervisor or enumerator of the census, and indorsed "Official business, Philippine Census," shall be transported free of postage; and all telegrams relative to the Philippine census sent or received by the officials aforesaid over all telephone and telegraph lines under public control in the Islands, shall be transmitted and delivered without prepayment of postage and telegraph charges: Provided, however, That the amount of such charges shall at the end of each fiscal year be credited on the accounts of the Bureau of Posts as part of its revenues, and charged to the expenses of the Census Bureau. Any person making use of these postal or telegraph franking privileges to avoid the payment of postage or telegraph charges on messages, letters, packages, or other matter sent by mail or telegraph shall be punished by a fine of not more than three hundred pesos, and in case of insolvency he shall suffer the corresponding subsidiary imprisonment. The Director of the Census is authorized to employ, in his discretion, messengers or couriers, at a compensation to be fixed by him, for the' purpose of expeditiously conveying official census mail of any class to any locality."