 The first of the series appeared on January 15, 1908 and the series had so much success that in May of the same year, the set was published in the form of a unified book.In the third book of the series, Baden-Powell advised the Scouts as recourse to use the international language Esperanto as a "secret language of the patrol".The passage in question disappeared in some later editions, however one could read on page 202 of "Scouting for Boys", in the original version