𝔖 Bobbio Scriptorium
✦   LIBER   ✦

BREAD-FRUIT TREES IN NORTH AMERICA

✍ Scribed by Knowlton, F. H.


Book ID
121098062
Publisher
American Association for the Advancement of Science
Year
1893
Tongue
English
Weight
285 KB
Category
Article
ISSN
0036-8075

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## Abstract Maximum entropy spectrum analysis of 305 tree‐ring chronologies from North America yields evidence for two terms with periods 18.6 Β± 1.3 years (in 286 out of 305 series) and 10.5 Β± 0.5 years in 244 instances. Statistical tests show the terms to be significant at confidence levels of 99.