"SEC. 287. Leave to go abroad—Half pay and travel allowance.—When an employee entitled to accrued leave has served in the Islands for three years or more and has accumulated to his credit the accrued leave allowed for two full years, he may, in the discretion of the proper Department Head, but not oftener than once in each period of three years, be granted permission to go abroad, with the half-pay and travel-expense allowances hereinbelow specified:
"(a) If he is given permission to visit the United States, he shall be allowed, with half pay, in addition to the leave granted, sixty days for the time occupied by him in going to and returning from the United States if he is serving in Manila, and if serving in the province sixty days plus the actual and necessary time consumed from date of departure from station to date of departure from Manila, and on returning, from date of arrival at Manila to date of arrival at station, such half salary to be paid on return to duty; if he is granted permission to visit any other country he shall be allowed, under the same conditions and in lieu of the sixty days' half pay above provided, actual and necessary travel time with half pay not exceeding sixty days.
"(b) On the completion of two years of continuous, faithful, and satisfactory service, after returning to the Islands from such leave of absence to visit the United States, he shall be allowed his travel expense from his place of residence in the United States to Manila if he come by the route and steamer directed, and if returning from any other country or from the United States, not residing therein, he shall be allowed his travel expense to Manila from the port of embarkation in the United States or such other country not exceeding one thousand pesos.
"Subject to the same qualifications, these privileges shall also be accorded to persons going abroad on teacher's leave under section two hundred and seventy-four hereof, and in addition, there shall be accorded to them and to principals, supervisors, and superintendents going on accrued leave, the travel expenses created in section two hundred and sixty-four hereof, subject to the same conditions prescribed therein."