The Baltic Dry Index: A centuries old window into the economy
![](https://media.wnyc.org/i/800/0/c/85/photologue/photos/tt/the French ships ASTROLABE and ZELEE under Dumont D'Urville's command_437.jpg)
French ships Astrolabe and Zelee under the command of Dumont D'Urville
( USASearch.gov )
( USASearch.gov )