Brockhaus-1911: Hypothese · Self-made man
Eisler-1904: Kosmorganische Hypothese · Kosmozoische Hypothese · Helmholtzsche Hypothese · Hypothese
Kirchner-Michaelis-1907: Young-Helmholtzsche Hypothese · Hypothese · Helmholtzsche Hypothese
Lueger-1904: Avogadros Hypothese
Meyers-1905: Hypothēse · Hofacker-Sadlersche Hypothese · Missing link · Self-made man