The nature of alcoholic drinks and narcotics, and special instruction as to their effects upon the human system, in connection with the several divisions of the subject of physiology and hygiene, shall be included in the branches of study taught in the common or public schools, and in the military and naval schools, and shall be studied and taught as thoroughly and in the same manner as other like required branches are in said schools, by the use of textbooks in the hands of pupils where other branches are thus studied in said schools, and by all pupils in all said schools throughout the Territories, in the Military and Naval Academies of the United States, and in the District of Columbia, and in all Indian and colored schools in the Territories of the United States.