in late 1827, niépce visited england. he showed this and several other specimens of his work to botanical illustrator francis bauer. "view from the window at le gras" was the only example of a camera photograph; the rest were contact-exposed copies of artwork. bauer encouraged him to present his "heliography" process to the royal society. niépce wrote and submitted a paper but was unwilling to reveal any specific details in it, so the royal society rejected it based on a rule that prohibited presentations about undisclosed secret processes. before returning to france, niépce gave his paper and the specimens to bauer. niépce died suddenly in 1833, due to a stroke.