The demonstration community packing house, heretofore created and established at Inwood, in Berkeley county, West Virginia, shall continue to be operated under the direction and supervision of the cooperative extension service of the college of agriculture of the West Virginia University, for the purpose of demonstrating the most approved methods of picking, sorting, packing, warehousing and storing apples, peaches and other similar fruit, and for the purpose of teaching any citizen of this state approved methods of picking, sorting and packing such fruit in barrels, boxes and other containers, and of warehousing and storing the same.