Samuel Pierpont Langley
Towards the turn of the century he returned to studying the movement of quite abstract forms, like a falling ball. His last great work, executed just before the outbreak of Fauvism in Paris, was the observation and photography of smoke trails. This research was partially funded by Samuel Pierpont Langley under the auspices of the Smithsonian Institution, after the two met in Paris at the Exposition Universelle (1900).