Dr. William Austin Cannon House
Historic residence · Tucson, United States
Scientists & inventors
About Andrew Ellicott Douglass
A. E. Douglass was an American astronomer and archaeologist. 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.
From the Wikipedia article “Andrew Ellicott Douglass”, CC BY-SA 4.0.
Visiting
This building is recorded as a residence of the people listed; it may be privately owned and not open to the public. Opening times, tickets and access change, so check the official website before you travel. Get directions.