Douglass, A. E. (Andrew Ellicott), 1867-1962

Contributed to

Checking the date of Bluff Ruin, Forestdale
essay 1985

Summary: A. E. Douglass was an American astronomer. He discovered a correlation between tree rings and the sunspot cycle, and founded the discipline of dendrochronology, which is a method of dating wood by analyzing the growth ring pattern. He started his discoveries in this field in 1894 when he was working at the Lowell Observatory. During this time he was an assistant to Percival Lowell, but fell out with him when his experiments made him doubt the existence of artificial "canals" on Mars and visible spokes on Venus. Wikipedia
Encyclopædia Britannica: Biography [1]
Gender or Sex: Male [2][3][4][1]
Born: 1867 [3]; 1867-07-05 [1]
Birth Place: Windsor [1]; Windsor, Vt. [4]
Died: 1962 [3]; 1962-03-20 [1]
Death Place: Tucson [1]; Tucson, Ariz. [4]
Country: United States [3]
Language: English [4]
Occupation: astronomer [1]; archaeologist [1]; university teacher [1]; dendrochronologist [1]
Profession: Astronom [3]
Employer: University of Arizona [1]
Educated at: Trinity College [1]
Country of Education: United States [1]
Archives at: University of Arizona Libraries [1]

Sources: 1. Wikidata; 2. VIAF; 3. Deutsche Nationalbibliothek (Germany); 4. Bibliothèque nationale de France

Last updated Jun 15, 2025