1THE PLANET MARS AND ITS INHABITANTS
12VOCATIONAL DETERMINATION, SCHOOL AGE, MARRIAGE AND SCIENCE
2POPULATION CENTERS, TEMPERATURE, CLIMATE
13MUSIC AN EXPRESSION OF THE FATHER
3THE MARTIAN CANAL SYSTEM
14AERONAUTICS, INHABITED PLANETS, SECTARIANISM
4PLANETARY ECONOMY
15LIFE AN ATTRIBUTE OF THE ENTIRE UNIVERSE.
5PROPERTY AND PROPERTY RIGHTS
16THE RISEN CHRIST