The Positive Outcome of Philosophy / The Nature of Human Brain Work. Letters on Logic

The Biology, Physiology and Sociology of Reproduction / Also Sexual Hygiene with Special Reference to the Male

Logic / Deductive and Inductive

The Principles of Masonic Law / A Treatise on the Constitutional Laws, Usages and Landmarks of / Freemasonry

Five Stages of Greek Religion

Three Philosophical Poets / Lucretius, Dante, and Goethe