설명
Doctor Fergusson is brave explorer, in order to connect the results of the previous exploration in Africa and explore the savage lands in Africa, he selected to explore in Africa by hydrogen. This was a pioneering work at that time and it caused the discussion and questioning from many people. However, Doctor Fergusson still started the journey of exploration along with Kennedy, his good friend and Joe, his servant. They shared weal and woe on the way and appreciated the beautiful scenery in Africa, and they also experienced the dangerous times of combating with savages and animals. This story presents the dauntless spirit of adventure and precious quality of mutual helping among the people.