Augustus Pleasonton

Augustus J. Pleasonton
Portrait of Colonel Augustus James Pleasonton (1846) by John Neagle
Born	(1808-01-21)January 21, 1808 Washington, D.C.
Died	July 26, 1894(1894-07-26) (aged 86) Philadelphia
Occupation(s)	Soldier, lawyer
Known for	Military service in Buckshot War (1838), Philadelphia Nativist Riots (1844), and U.S. Civil War Influence on chromotherapy
Notable work	The Influence of the Blue Ray of the Sunlight and of the Blue Color of the Sky
Relatives	Stephen Pleasonton (father) Alfred Pleasonton (brother)

Augustus James Pleasonton, often called A. J. Pleasonton (January 21, 1808 – July 26, 1894), was a militia general during the American Civil War. He wrote the book The Influence of the Blue Ray of the Sunlight and of the Blue Color of the Sky, which was published in 1876. This book is often attributed to being the birth of the contemporary pseudoscientific practice of chromotherapy.