CHAPTER IV.
GENIUS AND INSANITY.....66-99
Resemblance between genius and insanity--Men and women of genius who have been insane--Montanus--Harrington--Haller--Schumann--Gérard de Nerval--Baudelaire--Concato--Mainländer--Comte--Codazzi--Bolyai --Cardan--Tasso--Swift--Newton--Rousseau--Lenau--Széchényi--Hoffmann --Foderà--Schopenhauer--Gogol.
PART II.
_THE CAUSES OF GENIUS._
METEOROLOGICAL INFLUENCES ON GENIUS.....100-116
The influence of weather on the insane--Sensitiveness of men of genius to barometrical conditions--Sensitiveness to thermometrical conditions.