Scope and Content From the Collection: Hermann Fricke's manuscript of "Eine Neue Sonnentheorie" ("A New Theory of the Sun") from 1932 utilizes Sir William Siemens and William Herschel's ideas on sun spots and the solar corona to suggest new theoretical perspectives on the sun's relationship to the atmosphere. Points of discussion include "The Unlikelihood of Prominent Ideas/Theories of the Sun," "Sun Spots," "The Corona," "The Comets," "The Courvoisier Effect," "The Spectrum of the Sun," "The Planets, Jupiter" and "The Model of a...