1. To encourage the industrial training of young persons, resident in district boarding-schools among the agricultural population, and in boarding departments connected with the undenominational public schools, a sum not exceeding £50 per annum will be allowed in aid of the expenses of such industrial departments or trade-classes as shall be open with the consent of the Government, provided that no allowance shall be given for any industrial department or trade-class which is not daily attended by a satisfactory number of young persons of suitable age.