The secondary schools were at first slow to take adequate measures, but a special order of September 20, 1831, directed that this be done just as soon as circumstances permitted. An administrative order of February 14, 1832, made the introduction of instruction in gymnastics a necessary condition of permission to open any private school for boys. September 14, 1833, Nachtegall’s manual and regulations for secondary schools[141] received the King’s approval, and it was published the following year. In 1836 he was sent on a tour of inspection among the _Seminarier_, to see what was being done in them and to give any needful counsel and suggestions. He found the interest in gymnastics general, but lack of sufficient apparatus in some places and in others faulty methods, and therefore arranged to have the teachers of gymnastics at three of the _Seminarier_ take a summer course at the Normal School in 1837. In obedience to an order of March 7, 1838, he made a second tour, primarily to inspect the Latin schools, but took advantage of the opportunity to visit the _Seminarier_ again. Hitherto it had been boys and young men alone who were reached by gymnastics in the schools, but an order of March 28, 1838, given in response to Nachtegall’s proposal, established an experimental school for girls. Thirty pupils, ranging in age from six to fifteen years, were selected from among the girls at the garrison school, and beginning in the spring of the same year these received three lessons a week from five teachers (three sergeants and two women) at the Military Gymnastic Institute, under the general direction of Nachtegall and a physician. The success of this experiment suggested a normal school of gymnastics for women (_Normalskole for Kvindegymnastik_). An order of February 20, 1839, approved the plan, and prescribed that women teachers, and others who wished it, should receive an opportunity at the Institute to become acquainted with methods of teaching and that the exercises practised there and the mode of progression adopted should serve as a model for the schools for girls which introduced gymnastics. These latter were also put under Nachtegall’s supervision. The number of pupils at the Normal School now increased. In the summer of 1839 lessons in the new subject were begun with girls in the royal navy schools (_Søetatens Skoler_), and many other Copenhagen schools took a similar step.