Here are some lectures that are embellishing the Cosmic Forces, Cosmic Substance, Earthly Forces and Earthly Substance, so central in the Agriculture Course
Agriculture Course – GA edit – Cosmic and Earthly Activities – June 1924
Man as Symphony of the Creative Word – Lecture 3 – 21 October 1923
Evolution of Consciousness – Lecture 5 – 23 August 1923
Anthroposophical Medical Therapy – Lecture 1 – 11 April 1921
Physiology and Therapeutics – Lecture 3 – 9 Oct 1920