EXCLUDING FROM THE OPERATION OF PROCLAMATION NO. 260 DATED JUNE 22, 1951, WHICH ESTABLISHED THE MINDORO AGRICULTURAL SCHOOL RESERVATION SITUATED IN THE MUNICIPALITY OF VICTORIA, PROVINCE OF ORIENTAL MINDORO, ISLAND OF MINDORO, A CERTAIN PORTION OF THE LAND EMBRACED THEREIN AND RESERVING THE SAME FOR HORTICULTURAL RESEARCH CENTER SITE PURPOSES OF THE BUREAU OF PLANT INDUSTRY.